Vapor pressure. Medical search

The contribution to barometric PRESSURE of gaseous substance in equilibrium with its solid or liquid phase.

A phase transition from liquid state to gas state, which is affected by Raoult's law. It can be accomplished by fractional distillation.

Measurement of the OSMOLARITY of solutions or BODY FLUIDS.

The loss of water vapor by plants to the atmosphere. It occurs mainly from the leaves through pores (stomata) whose primary function is gas exchange. The water is replaced by a continuous column of water moving upwards from the roots within the xylem vessels. (Concise Dictionary of Biology, 1990)

A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

A measure of the amount of WATER VAPOR in the air.

Water in its gaseous state. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

A plant genus of the family FABACEAE that is a source of prosopis gum.

A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Technique whereby the weight of a sample can be followed over a period of time while its temperature is being changed (usually increased at a constant rate).

The climate of a very small area.

PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.

Closable openings in the epidermis of plants on the underside of leaves. They allow the exchange of gases between the internal tissues of the plant and the outside atmosphere.

Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)

The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.

The process of exocrine secretion of the SWEAT GLANDS, including the aqueous sweat from the ECCRINE GLANDS and the complex viscous fluids of the APOCRINE GLANDS.

The state of the ATMOSPHERE over minutes to months.

Parts of plants that usually grow vertically upwards towards the light and support the leaves, buds, and reproductive structures. (From Concise Dictionary of Biology, 1990)

The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.

The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. Photosynthesis comprises two separate processes: the light reactions and the dark reactions. In higher plants; GREEN ALGAE; and CYANOBACTERIA; NADPH and ATP formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from Oxford Dictionary of Biochemistry and Molecular Biology, 2001)

A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.

The pressure due to the weight of fluid.

The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.

A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)

Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

Techniques for measuring blood pressure.

High vapor pressure perfluorocarbons cause vesicle fusion and changes in membrane packing. (1/30)

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Phenotypic differences in terrestrial frog embryos: effect of water potential and phase. (2/30)

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Expanded prediction equations of human sweat loss and water needs. (3/30)

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Phenology and growth adjustments of oil palm (Elaeis guineensis) to photoperiod and climate variability. (4/30)

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How yield relates to ash content, Delta 13C and Delta 18O in maize grown under different water regimes. (5/30)

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Height-related trends in stomatal sensitivity to leaf-to-air vapour pressure deficit in a tall conifer. (6/30)

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Transpiration response of 'slow-wilting' and commercial soybean (Glycine max (L.) Merr.) genotypes to three aquaporin inhibitors. (7/30)

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Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit. (8/30)

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Vapor pressure, in the context of physical chemistry and thermodynamics, refers to the pressure exerted by a vapor in equilibrium with its condensed phase (liquid or solid) at a given temperature. It is a measure of the escaping tendency of molecules from the liquid or solid state to the gas state. At higher temperatures, the vapor pressure generally increases because a greater number of molecules possess sufficient energy to overcome intermolecular forces and enter the vapor phase.

In medical terminology, vapor pressure is not frequently used explicitly. However, understanding this concept can be helpful in pharmaceutical sciences, particularly when dealing with the formulation and delivery of drugs in various dosage forms such as aerosols, nebulizers, or inhalers. These applications rely on the transformation between liquid and vapor states under specific conditions to achieve desired therapeutic effects.

Volatilization, in the context of pharmacology and medicine, refers to the process by which a substance (usually a medication or drug) transforms into a vapor state at room temperature or upon heating. This change in physical state allows the substance to evaporate and be transferred into the air, potentially leading to inhalation exposure.

In some medical applications, volatilization is used intentionally, such as with essential oils for aromatherapy or topical treatments that utilize a vapor action. However, it can also pose concerns when volatile substances are unintentionally released into the air, potentially leading to indoor air quality issues or exposure risks.

It's important to note that in clinical settings, volatilization is not typically used as a route of administration for medications, as other methods such as oral, intravenous, or inhalation via nebulizers are more common and controlled.

Osmometry is a laboratory technique used to measure the osmolarity or tonicity of a solution. Osmolarity refers to the number of osmoles (a unit of measurement for solute concentration) present in a given volume of solution, typically expressed as osmoles per liter (osm/L). Tonicity, on the other hand, is a measure of the effective osmotic pressure exerted by a solution, taking into account the presence of impermeable solutes.

In an osmometry experiment, a sample solution is placed in a chamber separated from a reference solution by a semi-permeable membrane that allows the passage of solvent (usually water) but not solute molecules. The membrane separates the two solutions, creating two distinct compartments.

As the solvent moves across the membrane to balance out the osmotic pressure difference between the two solutions, a change in volume occurs in one or both of the compartments. By measuring this volume change and knowing the initial volumes of the sample and reference solutions, the osmolarity or tonicity of the sample solution can be calculated using established formulas.

Osmometry is an essential tool in various fields, including biology, chemistry, pharmacology, and clinical medicine, as it allows researchers and healthcare professionals to study and understand the behavior of solutes and solvents under different conditions, evaluate the effects of osmotic pressure on cells and tissues, and develop and test medical treatments and therapies.

Plant transpiration is the process by which water vapor escapes from leaves and other aerial parts of plants to the atmosphere. It is a type of evapotranspiration, which refers to both evaporation from land surfaces and transpiration from plants. Water molecules are absorbed by plant roots from the soil, move up through the xylem tissue to the leaves, and then evaporate from the leaf surface through stomatal pores. This process helps in the transportation of nutrients from the soil to various parts of the plant, regulates the temperature of the plant, and maintains the turgor pressure within the cells. Plant transpiration is influenced by environmental factors such as light intensity, temperature, humidity, and wind speed.

In medical terms, pressure is defined as the force applied per unit area on an object or body surface. It is often measured in millimeters of mercury (mmHg) in clinical settings. For example, blood pressure is the force exerted by circulating blood on the walls of the arteries and is recorded as two numbers: systolic pressure (when the heart beats and pushes blood out) and diastolic pressure (when the heart rests between beats).

Pressure can also refer to the pressure exerted on a wound or incision to help control bleeding, or the pressure inside the skull or spinal canal. High or low pressure in different body systems can indicate various medical conditions and require appropriate treatment.

Humidity, in a medical context, is not typically defined on its own but is related to environmental conditions that can affect health. Humidity refers to the amount of water vapor present in the air. It is often discussed in terms of absolute humidity (the mass of water per unit volume of air) or relative humidity (the ratio of the current absolute humidity to the maximum possible absolute humidity, expressed as a percentage). High humidity can contribute to feelings of discomfort, difficulty sleeping, and exacerbation of respiratory conditions such as asthma.

I'm sorry for any confusion, but "steam" is not a medical term. It refers to water in its gaseous state, produced when water is heated to its boiling point. If you have any questions about a medical condition or treatment, please provide more context and I will do my best to help answer your question.

"Prosopis" is a genus of flowering plants in the pea family, Fabaceae. It includes several species of spiny trees and shrubs that are native to arid and semi-arid regions of America, Africa, and Asia. Some common names for Prosopis species include mesquite, algarrobo, and jand. These plants are known for their ability to fix nitrogen in the soil, making them valuable for improving soil fertility in areas where they grow. They also produce seed pods that are a valuable food source for wildlife and humans in some regions. However, Prosopis species can also be invasive in some areas, outcompeting native vegetation and altering ecosystems.

Medical definitions of water generally describe it as a colorless, odorless, tasteless liquid that is essential for all forms of life. It is a universal solvent, making it an excellent medium for transporting nutrients and waste products within the body. Water constitutes about 50-70% of an individual's body weight, depending on factors such as age, sex, and muscle mass.

In medical terms, water has several important functions in the human body:

1. Regulation of body temperature through perspiration and respiration.
2. Acting as a lubricant for joints and tissues.
3. Facilitating digestion by helping to break down food particles.
4. Transporting nutrients, oxygen, and waste products throughout the body.
5. Helping to maintain healthy skin and mucous membranes.
6. Assisting in the regulation of various bodily functions, such as blood pressure and heart rate.

Dehydration can occur when an individual does not consume enough water or loses too much fluid due to illness, exercise, or other factors. This can lead to a variety of symptoms, including dry mouth, fatigue, dizziness, and confusion. Severe dehydration can be life-threatening if left untreated.

Thermogravimetry (TG) is a technique used in materials science and analytical chemistry to measure the mass of a substance as a function of temperature while it is subjected to a controlled heating or cooling rate in a carefully controlled atmosphere. The sample is placed in a pan which is suspended from a balance and heated at a constant rate. As the temperature increases, various components of the sample may decompose, lose water, or evolve gases, resulting in a decrease in mass, which is recorded by the balance.

TG can be used to determine the weight loss due to decomposition, desorption, or volatilization, and to calculate the amount of various components present in a sample. It is often used in conjunction with other techniques such as differential thermal analysis (DTA) or differential scanning calorimetry (DSC) to provide additional information about the thermal behavior of materials.

In summary, thermogravimetry is a method for measuring the mass changes of a material as it is heated or cooled, which can be used to analyze its composition and thermal stability.

A microclimate refers to a localized climate or weather conditions that differ from those in the surrounding areas. It is typically created by differences in terrain, vegetation, water bodies, or man-made structures that can affect temperature, humidity, wind, and precipitation patterns. In medical terms, understanding microclimates can be important for studying the spread of diseases, air quality, and other environmental factors that may impact human health. For example, urban microclimates created by concrete and asphalt can retain heat and increase air pollution levels, which may exacerbate respiratory symptoms in individuals with lung disease.

Blood pressure is the force exerted by circulating blood on the walls of the blood vessels. It is measured in millimeters of mercury (mmHg) and is given as two figures:

1. Systolic pressure: This is the pressure when the heart pushes blood out into the arteries.
2. Diastolic pressure: This is the pressure when the heart rests between beats, allowing it to fill with blood.

Normal blood pressure for adults is typically around 120/80 mmHg, although this can vary slightly depending on age, sex, and other factors. High blood pressure (hypertension) is generally considered to be a reading of 130/80 mmHg or higher, while low blood pressure (hypotension) is usually defined as a reading below 90/60 mmHg. It's important to note that blood pressure can fluctuate throughout the day and may be affected by factors such as stress, physical activity, and medication use.

Stomata are microscopic pores found in the epidermis of plant leaves, stems, and other organs. They are essential for gas exchange between the plant and the atmosphere, allowing the uptake of carbon dioxide for photosynthesis and the release of oxygen. Plant stomata consist of two guard cells that surround and regulate the size of the pore. The opening and closing of the stomatal pore are influenced by environmental factors such as light, humidity, and temperature, as well as internal signals within the plant.

I believe there may be a slight misunderstanding in your question. "Plant leaves" are not a medical term, but rather a general biological term referring to a specific organ found in plants.

Leaves are organs that are typically flat and broad, and they are the primary site of photosynthesis in most plants. They are usually green due to the presence of chlorophyll, which is essential for capturing sunlight and converting it into chemical energy through photosynthesis.

While leaves do not have a direct medical definition, understanding their structure and function can be important in various medical fields, such as pharmacognosy (the study of medicinal plants) or environmental health. For example, certain plant leaves may contain bioactive compounds that have therapeutic potential, while others may produce allergens or toxins that can impact human health.

In medical terms, 'air' is defined as the mixture of gases that make up the Earth's atmosphere. It primarily consists of nitrogen (78%), oxygen (21%), and small amounts of other gases such as argon, carbon dioxide, and trace amounts of neon, helium, and methane.

Air is essential for human life, as it provides the oxygen that our bodies need to produce energy through respiration. We inhale air into our lungs, where oxygen is absorbed into the bloodstream and transported to cells throughout the body. At the same time, carbon dioxide, a waste product of cellular metabolism, is exhaled out of the body through the lungs and back into the atmosphere.

In addition to its role in respiration, air also plays a critical role in regulating the Earth's climate and weather patterns, as well as serving as a medium for sound waves and other forms of energy transfer.

Sweating, also known as perspiration, is the production of sweat by the sweat glands in the skin in response to heat, physical exertion, hormonal changes, or emotional stress. Sweat is a fluid composed mainly of water, with small amounts of sodium chloride, lactate, and urea. It helps regulate body temperature by releasing heat through evaporation on the surface of the skin. Excessive sweating, known as hyperhidrosis, can be a medical condition that may require treatment.

I'm sorry for any confusion, but "weather" is not a medical term. Weather refers to the state of the atmosphere at a particular place and time, including factors such as temperature, humidity, cloudiness, precipitation, and wind. If you have any questions about medical terms or concepts, I would be happy to try to help answer those for you!

A plant stem is not typically defined in a medical context, but rather in the field of botany. However, I can certainly provide a general biological definition for you.

In plants, stems are organs that serve primarily as support structures, holding leaves, flowers, and fruits aloft where they can receive sunlight and exchange gases. They also act as conduits, transporting water, nutrients, and sugars made during photosynthesis between the roots and shoots of a plant.

The stem is usually composed of three main tissue systems: dermal, vascular, and ground. The dermal tissue system forms the outermost layer(s) of the stem, providing protection and sometimes participating in gas exchange. The vascular tissue system contains the xylem (which transports water and nutrients upward) and phloem (which transports sugars and other organic compounds downward). The ground tissue system, located between the dermal and vascular tissues, is responsible for food storage and support.

While not a direct medical definition, understanding the structure and function of plant stems can be relevant in fields such as nutrition, agriculture, and environmental science, which have implications for human health.

Temperature, in a medical context, is a measure of the degree of hotness or coldness of a body or environment. It is usually measured using a thermometer and reported in degrees Celsius (°C), degrees Fahrenheit (°F), or kelvin (K). In the human body, normal core temperature ranges from about 36.5-37.5°C (97.7-99.5°F) when measured rectally, and can vary slightly depending on factors such as time of day, physical activity, and menstrual cycle. Elevated body temperature is a common sign of infection or inflammation, while abnormally low body temperature can indicate hypothermia or other medical conditions.

Photosynthesis is not strictly a medical term, but it is a fundamental biological process with significant implications for medicine, particularly in understanding energy production in cells and the role of oxygen in sustaining life. Here's a general biological definition:

Photosynthesis is a process by which plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of organic compounds, such as glucose (or sugar), using water and carbon dioxide. This process primarily takes place in the chloroplasts of plant cells, specifically in structures called thylakoids. The overall reaction can be summarized as:

6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2

In this equation, carbon dioxide (CO2) and water (H2O) are the reactants, while glucose (C6H12O6) and oxygen (O2) are the products. Photosynthesis has two main stages: the light-dependent reactions and the light-independent reactions (Calvin cycle). The light-dependent reactions occur in the thylakoid membrane and involve the conversion of light energy into ATP and NADPH, which are used to power the Calvin cycle. The Calvin cycle takes place in the stroma of chloroplasts and involves the synthesis of glucose from CO2 and water using the ATP and NADPH generated during the light-dependent reactions.

Understanding photosynthesis is crucial for understanding various biological processes, including cellular respiration, plant metabolism, and the global carbon cycle. Additionally, research into artificial photosynthesis has potential applications in renewable energy production and environmental remediation.

Carbon dioxide (CO2) is a colorless, odorless gas that is naturally present in the Earth's atmosphere. It is a normal byproduct of cellular respiration in humans, animals, and plants, and is also produced through the combustion of fossil fuels such as coal, oil, and natural gas.

In medical terms, carbon dioxide is often used as a respiratory stimulant and to maintain the pH balance of blood. It is also used during certain medical procedures, such as laparoscopic surgery, to insufflate (inflate) the abdominal cavity and create a working space for the surgeon.

Elevated levels of carbon dioxide in the body can lead to respiratory acidosis, a condition characterized by an increased concentration of carbon dioxide in the blood and a decrease in pH. This can occur in conditions such as chronic obstructive pulmonary disease (COPD), asthma, or other lung diseases that impair breathing and gas exchange. Symptoms of respiratory acidosis may include shortness of breath, confusion, headache, and in severe cases, coma or death.

Hydrostatic pressure is the pressure exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity. In medical terms, hydrostatic pressure is often discussed in relation to body fluids and tissues. For example, the hydrostatic pressure in the capillaries (tiny blood vessels) is the force that drives the fluid out of the blood vessels and into the surrounding tissues. This helps to maintain the balance of fluids in the body. Additionally, abnormal increases in hydrostatic pressure can contribute to the development of edema (swelling) in the tissues.

Climate, in the context of environmental science and medicine, refers to the long-term average of weather conditions (such as temperature, humidity, atmospheric pressure, wind, rainfall, and other meteorological elements) in a given region over a period of years to decades. It is the statistical description of the weather patterns that occur in a particular location over long periods of time.

In medical terms, climate can have significant impacts on human health, both physical and mental. For example, extreme temperatures, air pollution, and ultraviolet radiation levels associated with certain climates can increase the risk of respiratory and cardiovascular diseases, heat-related illnesses, and skin cancer. Similarly, changes in climate patterns can affect the distribution and prevalence of infectious diseases, such as malaria and Lyme disease.

Climate change, which refers to significant long-term changes in the statistical distribution of weather patterns over periods ranging from decades to millions of years, can have even more profound impacts on human health, including increased rates of heat-related illnesses and deaths, worsening air quality, and altered transmission patterns of infectious diseases.

I'm sorry for any confusion, but "soil" is not a term that has a medical definition. Soil is defined as the top layer of earth in which plants grow, a mixture of organic material, clay, sand, and silt. If you have any questions related to medicine or health, I would be happy to try to help answer them for you.

I'm sorry for any confusion, but "thermodynamics" is not a term that has a specific medical definition. It is a branch of physics that deals with the relationships between heat and other forms of energy. However, the principles of thermodynamics can be applied to biological systems, including those in the human body, such as in the study of metabolism or muscle function. But in a medical context, "thermodynamics" would not be a term used independently as a diagnosis, treatment, or any medical condition.

I'm sorry for any confusion, but "seasons" is not a term that has a medical definition. Seasons refer to the four divisions of the year (spring, summer, autumn or fall, and winter) based on the position of the earth in its orbit around the sun. If you have any questions related to health or medicine, I'd be happy to try to help answer those!

Blood pressure determination is the medical procedure to measure and assess the force or pressure exerted by the blood on the walls of the arteries during a heartbeat cycle. It is typically measured in millimeters of mercury (mmHg) and is expressed as two numbers: systolic pressure (the higher number, representing the pressure when the heart beats and pushes blood out into the arteries) and diastolic pressure (the lower number, representing the pressure when the heart rests between beats). A normal blood pressure reading is typically around 120/80 mmHg. High blood pressure (hypertension) is defined as a consistently elevated blood pressure of 130/80 mmHg or higher, while low blood pressure (hypotension) is defined as a consistently low blood pressure below 90/60 mmHg. Blood pressure determination is an important vital sign and helps to evaluate overall cardiovascular health and identify potential health risks.

... or equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed ... Engineer's Edge Vapor Pressure, Hyperphysics Vapor Pressure, The MSDS HyperGlossary Online vapor pressure calculation tool ( ... Reid vapor pressure Relative humidity Relative volatility Saturation vapor density Triple point True vapor pressure Vapor- ... the vapor pressure) of a solid. One method is to estimate the sublimation pressure from extrapolated liquid vapor pressures (of ...

https://en.wikipedia.org/wiki/Vapor_pressure

The true vapor pressure (TVP) at 100 °F differs slightly from the Reid vapor pressure (RVP) (per definition also at 100 °F), as ... True vapor pressure (TVP) is a common measure of the volatility of petroleum distillate fuels. It is defined as the equilibrium ... ASTM D2879 - 97(2007) Standard Test Method for Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of ... "Standard Test Method for Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by ...

https://en.wikipedia.org/wiki/True_vapor_pressure

Vapor phase osmometry (VPO), also known as vapor-pressure osmometry, is an experimental technique for the determination of a ... which is a consequence of solvent vapor condensing on the solution droplet (the solution droplet has a lower vapor pressure ... It works by taking advantage of the decrease in vapor pressure that occurs when solutes are added to pure solvent. This ... Bersted, Bruce A. (1973). "Molecular Weight Determination of High Polymers by Means of Vapor Pressure Osmometry and the Solute ...

https://en.wikipedia.org/wiki/Vapor_pressure_osmometry

The Reid vapor pressure (RVP) can differ substantially from the true vapor pressure (TVP) of a liquid mixture, since (1) RVP is ... Crude oil assay Gasoline volatility Vapor pressure ASTM D323 - 06 Standard Test Method for Vapor Pressure of Petroleum Products ... It is defined as the absolute vapor pressure exerted by the vapor of the liquid and any dissolved gases/moisture at 37.8 °C ( ... Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method) ASTM D323-15a, Standard Test Method for Vapor ...

https://en.wikipedia.org/wiki/Reid_vapor_pressure

383, (1935). b - Ditchburn, R. W.; Gilmour, J. C. (1941-10-01). "The Vapor Pressures of Monatomic Vapors". Reviews of Modern ... Vapor Pressure of the Metallic Elements The equations reproduce the observed pressures to an accuracy of ±5% or better. ... d - TRCVP, Vapor Pressure Database, Version 2.2P, Thermodynamic Research Center, Texas A&M University, College Station, TX. e ... The Vapor Pressure of Beryllium at 1170-1340K". Journal of the American Chemical Society. American Chemical Society (ACS). 67 ( ...

https://en.wikipedia.org/wiki/Vapor_pressures_of_the_elements_(data_page)

The maximum partial pressure (saturation pressure) of water vapor in air varies with temperature of the air and water vapor ... relative humidity occurs when the partial pressure of water vapor is equal to the equilibrium vapor pressure. This condition is ... Water vapor has lower density than that of air and is therefore buoyant in air but has lower vapor pressure than that of air. ... When water vapor is used as a lifting gas by a thermal airship the water vapor is heated to form steam so that its vapor ...

https://en.wikipedia.org/wiki/Water_vapor

CVD at atmospheric pressure. Low-pressure CVD (LPCVD) - CVD at sub-atmospheric pressures. Reduced pressures tend to reduce ... "Low Pressure Chemical Vapor Deposition - Technology and Equipment". Crystec Technology Trading GmbH. Shareef, I. A.; Rubloff, G ... Under certain conditions, PICVD can be operated at or near atmospheric pressure. Laser chemical vapor deposition (LCVD) - This ... Combustion chemical vapor deposition (CCVD) - Combustion Chemical Vapor Deposition or flame pyrolysis is an open-atmosphere, ...

https://en.wikipedia.org/wiki/Chemical_vapor_deposition

In medium-pressure mercury-vapor lamps, the lines from 200 to 600 nm are present. The lamps can be constructed to emit ... Low-pressure mercury-vapor lamps usually have a quartz bulb in order to allow the transmission of short wavelength light. If ... Mercury vapor lights operate at an internal pressure of around one atmosphere and require special fixtures, as well as an ... The strongest peaks of the emission line spectrum are In low-pressure mercury-vapor lamps only the lines at 184 nm and 254 nm ...

https://en.wikipedia.org/wiki/Mercury-vapor_lamp

The concept is related to saturation vapor pressure (SVP). It can be used to calculate exact quantity of water vapor in the air ... "Water Vapor and Vapor Pressure". (Wikipedia articles needing clarification from August 2012, Atmospheric thermodynamics, ... The saturation vapor density (SVD) is the maximum density of water vapor in air at a given temperature. ... at which the saturated vapor pressure is 4.58 mm of Hg or 610.616447 Pa (760 mm of Hg ≈ 1 atm = 1.01325 * 105 Pa). Therefore, ...

https://en.wikipedia.org/wiki/Saturation_vapor_density

P < 4 Torr) The low vapor pressure allowed early researchers and engineers to use it in comparatively simple set ups. Modern ... Easter, C.; O'Neal, C.B. (October 2009). "Characterization of High-Pressure $\hbox{XeF}_{2}$ Vapor-Phase Silicon Etching for ... Easter, C.; O'Neal, C.B. (October 2009). "Characterization of High-Pressure XeF2 Vapor-Phase Silicon Etching for MEMS ... Vapor etching overcomes stiction because no liquids are used during the etch process. Commonly, hydrogen fluoride and xenon ...

https://en.wikipedia.org/wiki/Vapor_etching

Again the heat needed to provide sufficient vapor pressure was produced by external means. The tubes used here were 5-10 mm in ... The gain medium consists of a small amount of strontium vapor held in a relatively high pressure buffer gas of helium. Average ... Small pieces of strontium were placed inside the tube at equally spaced intervals and the necessary vapor pressure was produced ... A strontium vapor laser is a laser that produces at its output, high-intensity pulsed light at a wavelength of 430.5 nm in the ...

https://en.wikipedia.org/wiki/Strontium_vapor_laser

... a vapor sorption isotherm shows the equilibrium amount of vapor sorbed as a function of steady state relative vapor pressure at ... For water sorption isotherms, water-relative vapor pressure is more commonly expressed as relative humidity. This is ... Both equilibrium vapor sorption isotherms and vapor sorption kinetic results can yield vital information for materials ranging ... Further, vapor sorption experiments can be used to study hydrate and solvate formation. Gravimetric vapor sorption experiments ...

https://en.wikipedia.org/wiki/Dynamic_vapor_sorption

If vapor forms in the fuel line, its lower density reduces the pressure developed by the weight of the fuel. This pressure is ... Fuel was drawn under negative pressure (gauge pressure) from the feed line, increasing the risk of a vapor lock developing ... A vapor lock being drawn into the fuel pump could disrupt the fuel pressure long enough for the float chamber in the carburetor ... Vapor lock was far more common in older gasoline-fuel systems incorporating a low-pressure mechanical fuel pump driven by the ...

https://en.wikipedia.org/wiki/Vapor_lock

Low vapor pressure. Au-Pd Gold-Palladium. Improved corrosion resistance over Au-Cu and Au-Ni alloys. Used for joining ... Low vapor pressure. Ni Nickel alloys, even more numerous than silver alloys. High strength. Lower cost than silver alloys. Good ... High vapor pressure due to volatile zinc, unsuitable for furnace brazing. Copper-rich alloys prone to stress cracking by ... Low vapor pressure. Pd Palladium. Good high-temperature performance, high corrosion resistance (less than gold), high strength ...

https://en.wikipedia.org/wiki/Brazing

"11.5: Vapor Pressure". Chemistry LibreTexts. 2014-11-18. Retrieved 2019-04-18. "Strontium (Sr) - Chemical properties, Health ... meaning they prefer to stay in a liquid or solid state rather than condensing into the atmosphere and existing as vapor. Cerium ...

https://en.wikipedia.org/wiki/Nuclear_fallout_effects_on_an_ecosystem

The vapor pressure in the cylinder is a function of temperature. When gaseous propane is drawn at a high rate, the latent heat ... The volatility of these lighter hydrocarbons caused them to be known as "wild" because of the high vapor pressures of unrefined ... "Propane Vapor Pressure". The Engineering ToolBox. 2005. Retrieved 2008-07-28. "Propane". The National Institute for ... Commonly stored under pressure at room temperature, propane and its mixtures will flash evaporate at atmospheric pressure and ...

https://en.wikipedia.org/wiki/Propane

CsF reaches a vapor pressure of 1 kilopascal at 825 °C, 10 kPa at 999 °C, and 100 kPa at 1249 °C. CsF chains with a thickness ... 2005). "Vapor Pressure" (PDF). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. p. 6.63. ISBN 0- ...

https://en.wikipedia.org/wiki/Caesium_fluoride

... at the steam-point pressure (1 atm = 1013.25 hPa) Similarly, the correlation for the saturation water vapor pressure over ice ... Wexler, A. (1977). "Vapor pressure formulation for ice". Journal of Research of the National Bureau of Standards Section A. 81A ... Notes Wexler, A. (1976). "Vapor pressure formulation for water in range 0 to 100°C. A revision". Journal of Research of the ... Flatau, P.J.; Walko, R.L.; Cotton, W.R. (1992). "Polynomial fits to saturation vapor pressure". Journal of Applied Meteorology ...

https://en.wikipedia.org/wiki/Goff–Gratch_equation

"Appendix C Coefficients for vapor pressure equation". Handbook of Vapor Pressure. Vol. 4. pp. 352-357. doi:10.1016/S1874-8813( ... Between 129.18 and 308.83 K the vapour pressure in mm Hg at temperature T in K is given by log10 P = 102.6712 -2541.6/T -43.347 ... the disassociation pressure of the monoamine complex was 23 mm Hg. SiClF3− is a trigonal bipyramidal shape with a Cl and F atom ...

https://en.wikipedia.org/wiki/Chlorotrifluorosilane

... ea is atmospheric vapor pressure, and ei is internal leaf vapor pressure. Δ D e = ϵ e q + ϵ k + ( Δ D v − ϵ k ) ( e a e i ) {\ ... Condensation of water vapor occurs in ascending air masses that develop a lower temperature and saturation vapor pressure. ... Lower temperature corresponds to lower saturation vapor pressure, which leads to more condensation that drives the residual ... Hopfner, A (October 1969). "Vapor Pressure Isotope Effects". Angewandte Chemie. 8 (10): 689-699. doi:10.1002/anie.196906891. ...

https://en.wikipedia.org/wiki/Hydrogen_isotope_biogeochemistry

Stull, Daniel R. (1947). "Vapor Pressure of Pure Substances. Organic and Inorganic Compounds". Industrial & Engineering ...

https://en.wikipedia.org/wiki/List_of_inorganic_compounds

K and Vapor Pressure of α-Pinene, d -Limonene, (±)-Linalool, and Citral Over the Pressure Range 1.0 kPa Atmospheric Pressure". ... Stull, Daniel R. (1947). "Vapor Pressure of Pure Substances. Organic and Inorganic Compounds". Industrial & Engineering ... Supercritical water (SCW) is obtained at a temperature of 374.2 °C and a pressure of 22.05 MPa. It behaves as a dense gas with ... Some substances that occur in the gas phase at ambient temperature and pressure can act as solvents if heated to temperatures ...

https://en.wikipedia.org/wiki/Green_solvent

They exhibit low vapor pressure. Many have low combustibility and are thermally stable. The solubility properties of ILs are ... Despite low vapor pressure many ionic liquids are combustible. When Tawny crazy ants (Nylanderia fulva) combat Fire ants ( ... ILs are attractive because of their low vapor pressure. Furthermore, ILs have an electrochemical window of up to six volts ( ... and have been considered as sealants due to their very low vapor pressure. Any salt that melts without decomposing or ...

https://en.wikipedia.org/wiki/Ionic_liquid

Flash evaporators: A polymer solution is preheated and brought into a separator, where pressure below the vapor pressure of the ... This requires sufficient vapor pressure.: 67-190 If possible, this is a very efficient method because the volatiles only need ... This is usually the last stage of a devolatizing process, when vapor pressure is low.: 261-290 Falling film evaporator: Polymer ... Film devolatilization occurs when there is no longer sufficient vapor pressure to generate bubbles, and requires on sufficient ...

https://en.wikipedia.org/wiki/Polymer_devolatilization

"High pressure sodium vapor lamp". Google Patents. Retrieved 21 December 2017. (Pages using the EasyTimeline extension, Articles ... 1963 Kurt Schmidt invents the first high pressure sodium-vapor lamp. 1972 M. George Craford invents the first yellow light- ... 1901 Peter Cooper Hewitt creates the first commercial mercury-vapor lamp. 1904 Alexander Just and Franjo Hanaman invent the ... 1920 Arthur Compton invents the sodium-vapor lamp. 1921 Junichi Miura creates the first incandescent lightbulb to utilize a ...

https://en.wikipedia.org/wiki/Timeline_of_lighting_technology

... has a high melting point and a low vapor pressure similar to tantalum and tungsten. Therefore, rhenium filaments ... Blackburn, Paul E. (1966). "The Vapor Pressure of Rhenium". The Journal of Physical Chemistry. 70: 311-312. doi:10.1021/ ... low vapor pressure, good wear resistance and ability to withstand arc corrosion of rhenium are useful in self-cleaning ... For example, the newer CFM International CFM56 high-pressure turbine (HPT) blades will use Rene N515 with a rhenium content of ...

https://en.wikipedia.org/wiki/Rhenium

"Vapor pressure of organic compounds". ChemAnalitica.com. 1 April 2009. Retrieved 21 September 2009. Zimakov, P.V.; Dyment, O. H ... "Boiling point or sublimation (°C) organic matter in the vapor pressure above 101.3 kPa". ChemAnalitica.com. 1 April 2009. ... vapor pressure p (in mmHg) varies with temperature (T in °C) as lg ⁡ p = 6.251 − 1115.1 244.14 + T {\displaystyle \lg p=6.251 ... The boiling point increases with the vapor pressure as follows: 57.7 °C (135.9 °F) (2 atm (200 kPa; 29 psi)), 83.6 °C (182.5 °F ...

https://en.wikipedia.org/wiki/Ethylene_oxide

"The vapor pressures of explosives". Trends in Analytical Chemistry. 42: 35-48. doi:10.1016/j.trac.2012.09.010. Retrieved 19 ... burn rate independent of pressure. Zirconium / potassium perchlorate: Used in the NASA Standard Initiator (NSI). Rapid pressure ... RDX / nitrocellulose: Gas generator, unsuitable for deep space missions, burn rate dependent on pressure. Boron / potassium ...

https://en.wikipedia.org/wiki/Pyrotechnic_fastener

ISBN 978-0-85404-182-4. Piacente; Gigli; Scardala; Giustini; Ferro (1995). "Vapor Pressure of C60 Buckminsterfullerene". J. ... The study found that the theoretical amount of H2 that can be retrieved from the OBB at ambient pressure approaches 9 wt %, a ... These polymers remain stable at ambient pressure and temperature once formed, and have remarkably interesting electronic and ... ambient pressure storage of hydrogen". These OBBs are created by binding atoms of a transition metal (TM) to C60 or C48B12 and ...

https://en.wikipedia.org/wiki/Buckminsterfullerene

Brown, Earl H.; Whitt, Carlton D. (1952). "Vapor Pressure of Phosphoric Acids". Industrial & Engineering Chemistry. 44 (3): 615 ...

https://en.wikipedia.org/wiki/Phosphoric_acid

... a part of the total gas pressure) if any other gas(es) are present with the vapor. The equilibrium vapor pressure of a liquid ... The converse is also true: if a vapor with components at certain concentrations or partial pressures is in vapor-liquid ... Recall from the first section that vapor pressures of liquids are very dependent on temperature. Thus the Po pure vapor ... or vapor pressure) in the vapor phase, but there is a relationship. The VLE concentration data can be determined experimentally ...

https://en.wikipedia.org/wiki/Vapor–liquid_equilibrium

Vapor pressure or equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed ... Engineers Edge Vapor Pressure, Hyperphysics Vapor Pressure, The MSDS HyperGlossary Online vapor pressure calculation tool ( ... Reid vapor pressure Relative humidity Relative volatility Saturation vapor density Triple point True vapor pressure Vapor- ... the vapor pressure) of a solid. One method is to estimate the sublimation pressure from extrapolated liquid vapor pressures (of ...

https://en.wikipedia.org/wiki/Vapor_pressure

X-ray induced fluorescence is demonstrated as a fast and accurate method for measuring elemental vapor pressures over a wide ... where the elemental vapor pressures of Dy over DyI$_3$ and Tm over TmI$_3$ were obtained across the range of partial pressures ... X-ray induced fluorescence is demonstrated as a fast and accurate method for measuring elemental vapor pressures over a wide ... Measurement of equilibrium elemental vapor pressures using x-ray induced fluorescence, Chemical Physics Letters, [online], ...

https://www.nist.gov/publications/measurement-equilibrium-elemental-vapor-pressures-using-x-ray-induced-fluorescence

... positive pressure. 1.2 This test method measures the integrity of the suit, glove, boot/bootie, and visor materials, ... Scope1.1 This test method measures the ability of a vapor protective ensemble (VPE), including seams, and closures to maintain ... Standard Test Method for Pressure Testing Vapor Protective Ensembles. Standard Test Method for Pressure Testing Vapor ... Standard Test Method for Pressure Testing Vapor Protective Ensembles Standard F1052 Standard Test Method for Pressure Testing ...

https://www.astm.org/f1052-97.html

2016 Standard Test Method for Vapor Pressure of Liquefied Petroleum Gases (LPG) (Expansion Method) from SAI Global ... 2016 Standard Test Method for Vapor Pressure of Liquefied Petroleum Gases (LPG) (Expansion Method) from SAI Global ... 1.1This test method covers the use of automatic vapor pressure instruments to determine the vapor pressure of liquefied ... 1.1This test method covers the use of automatic vapor pressure instruments to determine the vapor pressure of liquefied ...

https://infostore.saiglobal.com/en-gb/standards/astm-d-6897-2016-154257_saig_astm_astm_370512/

The vapor pressure is the pressure (if the vapor is mixed with other gases, the partial pressure) of a vapor. ... The term vapor pressure is often understood to mean saturated vapor pressure. A substance with a high vapor pressure at normal ... One gets the vapor pressure by solving this equation for p. Raoults law approximately governs the vapor pressure of mixtures ... When the partial pressure of any liquid equals its vapor pressure, the liquid is partially vaporized: liquid and vapor are in ...

https://academickids.com/encyclopedia/index.php/Vapor_pressure

... and a pressure relief valve cooperating to effect diversion of vapor present in the first cooling loop due to a leak between ... Vapor leak pressure relief and diversion system FR2102498A FR3108393B1 (en) 2020-03-18. 2021-03-12. PRESSURE RELIEF AND VAPOR ... US11702976B2 - Vapor leak pressure relief and diversion system - Google Patents. Vapor leak pressure relief and diversion ... This pressure may be monitored by the first pressure sensor 120. Should this pressure increase to a pressure value in excess of ...

https://patents.google.com/patent/US11702976

... for the gas and vapor sorption into glassy membranes in a large interval of pressure and temperature. For this purpose, the FFV ... A predictive model for gas and vapor sorption into glassy membranes at high pressure S. N. Shoghl, A. Raisi and A. Aroujalian, ... A predictive model for gas and vapor sorption into glassy membranes at high pressure ... for the gas and vapor sorption into glassy membranes in a large interval of pressure and temperature. For this purpose, the FFV ...

https://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra07331j

... ... Determination of vapor pressures of hazardous materials with transpiration method, coupled to chromatographic techniques ... Bikelytė, Greta (2021): Determination of vapor pressures of hazardous materials with transpiration method, coupled to ...

https://edoc.ub.uni-muenchen.de/30038/

Our table of vapor pressures has over 1000 values covering 90 elements. Each value has a full citation identifying its source. ...

https://www.knowledgedoor.com/2/elements_handbook/vapor_pressure_part_8.html

Low partial pressure chemical vapor deposition of graphene on copper. Jie Sun, Niclas Lindvall, Matthew Cole, Koh T.T. Angel, ... Low partial pressure chemical vapor deposition of graphene on copper. / Sun, Jie; Lindvall, Niclas; Cole, Matthew et al. In: ... Low partial pressure chemical vapor deposition of graphene on copper. IEEE Transactions on Nanotechnology. 2012 Mar;11(2):255- ... Low partial pressure chemical vapor deposition of graphene on copper. In: IEEE Transactions on Nanotechnology. 2012 ; Vol. 11, ...

https://researchportal.bath.ac.uk/en/publications/low-partial-pressure-chemical-vapor-deposition-of-graphene-on-cop

Additionally, we find that operation at higher pressurizations caused vapor flux decline that is attributed to the membrane ... yields a much higher Knudsen diffusivity that results in consistently higher vapor fluxes across different temperature-pressure ... and highlights the centrality of vapor permeability and mechanical robustness in developing high-performance membranes. ... The emerging vapor pressure-driven osmosis (VPDO) membrane technology enables direct conversion of abundant low-temperature (, ...

https://academiccommons.columbia.edu/doi/10.7916/d8-32n9-4730

Sodium vapor lamps are metal vapor lamps based on light emission from sodium (Na) atoms, sometimes with additional emission e.g ... Encyclopedia , letter S , Sodium vapor lamps. Sodium Vapor Lamps. Acronyms: LPS lamps (low-pressure sodium lamps), HPS lamps ( ... High-pressure Sodium Lamps. There are also high-pressure sodium vapor lamps (HPS lamps), also containing some mercury, operated ... Sodium vapor lamps produce orange quasi-monochromatic light with only little pressure broadening. More precisely speaking, ...

https://www.rp-photonics.com/sodium_vapor_lamps.html?banner=lamps

COSMOtherm is able to estimate saturation vapor pressures in the crystalline-solid state (. p. sat. s. ), if experimental ... Tao, Y. and McMurry, P. H.: Vapor pressures and surface free energies of C14-C18 monocarboxylic acids and C5 and C6 ... Saturation vapor pressure (psat) is an important thermodynamic property regulating the gas-to-particle partitioning of organic ... The saturation vapor pressure (psat) of low-volatility organic compounds (LVOCs) governs their partitioning between the gas and ...

https://acp.copernicus.org/articles/23/6863/2023/

Mercury vapor lamps are metal vapor lamps based on light emission from mercury (Hg) atoms. Different types are used for high- ... High-pressure Mercury Vapor Lamps. High-pressure mercury vapor arc lamps (a type of high intensity discharge lamps) are ... Low-pressure Mercury Vapor Lamps. In low-pressure lamps, the temperature rise is moderate, leading to a substantial, but not ... Medium-pressure Mercury Vapor Lamps. There are also medium-pressure mercury lamps, which have somewhat intermediate ...

https://www.rp-photonics.com/mercury_vapor_lamps.html

Then you can add them together if you want the total vapor pressure. However, you may be more interested in the vapor pressure ... the vapor pressure at a specific temperature. If you can do that, then you can use the two-point form to predict vapor pressure ... are the vapor pressure and temperature at point 1 (an arbitrary point), and $p_2$ and $T_2$ are the vapor pressure and ... Vapor is efficiently evolved when the sum of the vapor pressures is one atmosphere (boiling) given each mole fraction in ...

https://chemistry.stackexchange.com/questions/8754/how-to-determine-the-vapor-pressure-of-a-glycerine-and-propylene-glycol-mixture

The vapor pressure of a liquid is determined by the strength of the intermolecular forces between molecules. The stronger the ... What is Vapor Pressure Vapor pressure is the partial pressure of a vapor in equilibrium with its non-vapor phases. All liquids ... Vapor Pressure And Intermolecular Forces Vapor pressure is the pressure of a vapor in equilibrium with its non-vapor phases. ... the higher the vapor pressure. Vapor pressure is also affected by temperature. As temperature increases, the vapor pressure of ...

https://hvacbuster.com/what-determines-vapor-pressure/

What is VPD or Vapor Pressure Deficit? Definition and meaning of VPD. Importance of attaining ideal VPD levels when growing ... and the Saturation Vapor Pressure (SVP). In plan language: Vapor Pressure Deficit (VPD) means the difference in vapor pressure ... in units of pressure) between the Actual Vapor Pressure (AVP) and the Saturation Vapor Pressure (SVP). ... Actual Vapor Pressure (AVP) , Definition and Meaning. Actual Vapor Pressure (AVP) is the actual humidity in the air at a given ...

https://www.pharmout.net/meaning-of-vapor-pressure-deficit-vpd-definition/

Vapor pressure and evaporation coefficient studies of stannic oxide, zinc oxide, and beryllium nitride. (University of ... Atmospheric water vapor. Filed under: Water vapor, Atmospheric*. The Role of water vapor in climate : a strategic research plan ... Water-vapor pressure control in a volume. (National Aeronautics and Space Administration, Scientific and Technical Information ... Tables for obtaining the temperature of the dew-point, relative humidity, and vapor pressure.. (Signal Office, 1889), by United ...

https://onlinebooks.library.upenn.edu/webbin/book/browse?type=lcsubc&key=Water%20vapor%2C%20Atmospheric&c=x

Newest vapor-pressure questions feed Subscribe to RSS Newest vapor-pressure questions feed To subscribe to this RSS feed, copy ... How does placement of a pressure gauge in a tank of fluid affect the pressure readings? This is not a real system but rather ... Having both the pressure and temperature for saturated-liquid in a particular state of a cycle, I was interested in its ... How do temperature and pressure influence the rate of evaporation of water in a closed vessel? I am trying to solve a fairly ...

https://engineering.stackexchange.com/questions/tagged/vapor-pressure

What is Vapor Pressure Deficit (VPD):. Definition:. "Vapor-Pressure Deficit/Differential (VPD) is defined as the difference/ ... Vapor Pressure is the pressure at which liquid becomes a vapor. In Cannabis Cultivation, VPD refers to the difference between ... Vapor Pressure Deficit (VPD) relates to both of the above-mentioned growing factors which defines the amount of water vapors ... the vapor pressure within the plant and the vapor pressure of the surrounding of the plant. VPD drives transpiration. And upon ...

https://growdirector.com/vapor-pressure-deficit-vpd-in-cannabis-2/

Vapor pressure is the pressure of the gas above the liquid. The more vapor there is above, the higher the vapor pressure is. ... What is vapor pressure? The simple way to understand it, is to realize that pressure is caused by gas (in our case vapor). The ... vapor). Therefore, for a liquid with strong intermolecular forces, not a lot of vapor will be formed and the vapor pressure ... intermolecular forces and vapor pressure are inversely proportional. The higher the intermolecular forces the lower the vapor ...

https://www.transformationtutoring.com/single-post/2018/08/19/how-do-intermolecular-forces-affect-vapor-pressure

Liquid A has vapor pressure x , and liquid B has vapor pressure y . What is the mole fraction of the liquid mixture if the ... I know that Raoults Law tells us that the total vapor pressure is χx + (1-χ)y in this case. I also assume that the total vapor ... Is the vapor pressure of a liquid dependent on the pressure of the atmosphere in which it is measured? ... Raoults law tells us the relationship between the composition of the liquid and the vapor pressure above it:. $$P_A=\chi_A P^\ ...

https://chemistry.stackexchange.com/questions/34069/using-vapor-mole-fraction-and-pressure-to-determine-liquid-mole-fraction

vapor pressure. 0.31 mmHg ( 25 °C). vapor pressure. -. vapor pressure. -. vapor pressure. - ...

https://www.sigmaaldrich.com/US/en/product/sigald/i3380

Get a table of values and learn how to calculate vapor pressure. Know the vapor pressure of water. ... Vapor pressure is the equilibrium pressure of a vapor above its liquid or solid state in a closed container.. Vapor pressure ( ... Vapor Pressure of Water. The vapor pressure of water depends on its temperature. The vapor pressure of water at room ... Calculate Vapor Pressure Using Raoults Law. Raoults law relates the vapor pressure of a solution (Psolution) to the vapor ...

https://sciencenotes.org/vapor-pressure-definition-and-how-to-calculate-it/

vapor density. 4.7 (vs air). vapor pressure. ,3 mmHg ( 14.4 °C). 1 mmHg ( 20 °C). ...

https://www.sigmaaldrich.com/MX/en/product/aldrich/w263303

ASTM D323 is a standard test method for Vapor Pressure of Petroleum Products (Reid Method). See more on applications of ASTM ... ASTM D323 is a Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method). It is used to determine the vapor ... Of course, vapor pressure is a critically important factor. When it comes to automotive and aviation gasolines, it affects the ... Above that, vapor pressure is also used as an indirect measure of the evaporation rate of volatile petroleum solvents. ...

https://eralytics.com/standards/astm-d323/

... written 5.7 years ago by gawanderagini • 50 modified 19 ... When the vapor phase is produced by condensation from a liquid or solid source, the process is called physical vapor deposition ... Vapor deposition technologies include processes that put materials into a vapor state via condensation, chemical reaction, or ... Vapor deposition processes add energy and material onto the surface only, keeping the bulk of the object relatively cool and ...

https://www.ques10.com/p/27014/justify-the-need-of-vacuum-pressure-physical-vapor/

Vapor fractionation of silicate melts at high temperatures and atmospheric pressures journal, July 1967 * Walter, Louis S.; ... Vapor Pressure of Uranium journal, August 1954 * Rauh, Everett G.; Thorn, Robert J. ... Actinide diffusion in a haplogranitic melt: Effects of temperature, water content, and pressure journal, June 1997 * Mungall, J ... Na-species as well as more refractory Ca-species provides evidence for an oxygen-rich fireball based on the vapor pressure of ...

https://www.osti.gov/pages/biblio/1417958-diffusive-mass-transport-agglomerated-glassy-fallout-from-near-surface-nuclear-test

1995) Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 44.80 (Adapted Stein & Brown ... Vapor pressure (liquid/subcooled): 3.09E+004 Pa (232 mm Hg) Log Koa (Exp database): 2.310 Kp (particle/gas partition coef. (m3/ ... Volatile constituents of pressure cooked pork liver, J. Agric. Food Chem., 22(5), 1974, 827-831.) NIST Spectra nist ri. ... Desorption with solvent vapor as a method of sample preparation in the sorption preconcentration of organic-compounds from the ...

https://www.chemspider.com/Chemical-Structure.175.html

... but the vapor phase is generally predominant. Condensed phases of water occur under a wide r ... The vapor pressure of liquid and solid water phases at conditions relevant to the atmosphere Special Collection: Chemical ... Mario Nachbar, Denis Duft, Thomas Leisner; The vapor pressure of liquid and solid water phases at conditions relevant to the ... We report on the vapor pressure of these water phases with a focus on metastable amorphous solid water and stacking disordered ...

https://pubs.aip.org/aip/jcp/article-abstract/151/6/064504/561086/The-vapor-pressure-of-liquid-and-solid-water?redirectedFrom=fulltext

It expresses reduced vapor pressure as a function of reduced temperature. (wikipedia.org)

This is the equilibrium vapor pressure or saturation vapor pressure of that substance at that temperature. (academickids.com)
Saturation vapor pressure ( p sat ) is an important thermodynamic property regulating the gas-to-particle partitioning of organic compounds in the atmosphere. (copernicus.org)
The volatility of an organic compound can be quantified by its saturation vapor pressure ( p sat ) which is the key thermodynamic property describing the equilibrium gas-particle partitioning of the compound (Pankow, 1994). (copernicus.org)
VPD means the actual difference (in units of pressure) between the Actual Vapor Pressure (AVP) and the Saturation Vapor Pressure (SVP). (pharmout.net)
The saturation vapor pressure (SVP) is the maximum amount of water vapor that can exist in the air at any specified temperature. (pharmout.net)
Relative humidity (RH) is a percentage that the Actual Vapor Pressure (AVP) is to the Saturation Vapor Pressure (SVP). (pharmout.net)
So, when we refer to Vapor Pressure Deficit, in scientific terms, VPD means the actual difference (in units of pressure) between the Actual Vapor Pressure (AVP) and the Saturation Vapor Pressure (SVP) . (pharmout.net)

In a medical context, vapor pressure is sometimes expressed in other units, specifically millimeters of mercury (mmHg). (wikipedia.org)

Furthermore, the solubility data of the organic vapors and gas mixtures in the glassy membranes were successfully predicted by the modified NELF model. (rsc.org)

Thus, liquids with strong intermolecular interactions are likely to have smaller vapor pressures, with the reverse true for weaker interactions. (wikipedia.org)
This is important for volatile inhalational anesthetics, most of which are liquids at body temperature, but with a relatively high vapor pressure. (wikipedia.org)
As a general trend, vapor pressures of liquids at ambient temperatures increase with decreasing boiling points. (wikipedia.org)
This is illustrated in the vapor pressure chart (see right) that shows graphs of the vapor pressures versus temperatures for a variety of liquids. (wikipedia.org)
Raoult's law approximately governs the vapor pressure of mixtures of liquids. (academickids.com)
Liquids with strong intermolecular forces have high vapor pressures because it takes more energy to overcome these forces and escape into the gas phase. (hvacbuster.com)

The stronger the intermolecular forces, the higher the vapor pressure. (hvacbuster.com)
the higher the temperature, the higher the vapor pressure. (hvacbuster.com)
The more molecules there are in the gas, the higher the vapor pressure will be. (hvacbuster.com)
The more vapor there is above, the higher the vapor pressure is. (transformationtutoring.com)

The relationship between vapor pressure and intermolecular forces can be explained using principles of thermodynamics and statistical mechanics. (hvacbuster.com)
The graph of the relationship between vapor pressure and temperature is curve. (sciencenotes.org)

Due to the low operation pressure (e.g. below 1 Pa), the power density is moderate, leading to light emission with a limited radiance , as is typical for low-pressure discharge lamps. (rp-photonics.com)
There are also high-pressure sodium vapor lamps (HPS lamps), also containing some mercury, operated with a much higher power density (also a smaller emitting volume) and a correspondingly higher radiance . (rp-photonics.com)
The high density of the vapor allows for light emission with a much higher radiance . (rp-photonics.com)
We present evidence that supercooled liquid water and low density amorphous solid water do not belong to the same phase and therefore, no continuous vapor pressure curve can be given. (aip.org)

How do intermolecular forces affect vapor pressure? (transformationtutoring.com)
The surface area does not affect vapor pressure. (sciencenotes.org)

Sodium vapor lamps are metal vapor lamps based on light emission from sodium (Na) atoms, sometimes with additional emission e.g. from mercury. (rp-photonics.com)
Like most other types of metal vapor lamps , sodium vapor lamps need to be operated with a suitable electrical ballast for stabilizing the electric current. (rp-photonics.com)
Like most other types of metal vapor lamps, mercury vapor lamps need to be operated with a suitable electrical ballast for stabilizing the electric current. (rp-photonics.com)
See the article on metal vapor lamps for general properties of such lamps. (rp-photonics.com)

Therefore, for a liquid with strong intermolecular forces, not a lot of vapor will be formed and the vapor pressure will be low. (transformationtutoring.com)

This test method is not a true vapor pressure method and will not measure the full contribution from any dissolved gases such as nitrogen or helium if they are present. (saiglobal.com)
The contribution of light gases to the measured vapor pressure is highly dependent on the test temperature, type of gas, and V/L ratio of the test. (saiglobal.com)
The vapor pressure is the pressure (if the vapor is mixed with other gases, the partial pressure ) of a vapor . (academickids.com)
The proposed model was validated with the experimental data for the sorption of various gases and vapors in the glassy membranes including polysulfone (PSf), bisphenol chloral polycarbonate (BCPC), polystyrene (PS), polycarbonate (PC), poly(methyl methacrylate) (PMMA), poly(1-(trimethylsilyl)-1-propyne) (PTMSP) and polyphenylene oxide (PPO). (rsc.org)
But what you may not know is that even vapors, or gases, can be pressurized. (hvacbuster.com)

The vapor pressure of a liquid is a measure of how much evaporation is taking place at a given temperature. (hvacbuster.com)
In a closed container, the evaporation rate and condensation rate are equal at saturated vapor pressure. (sciencenotes.org)
Evaporation is the movement from the liquid state to the gas(vapor) state in Physical Science or Matter. (answers.com)

The vapor pressure of a liquid is determined by the strength of the intermolecular forces between molecules. (hvacbuster.com)
The vapor pressure of a liquid is directly proportional to the intermolecular forces between molecules. (hvacbuster.com)
The vapor pressure also depends on intermolecular forces between molecules in both phases. (hvacbuster.com)
The stronger the intermolecular forces, the more attracted the molecules in liquid are to each other and the harder it is to separate them to turn into gas (vapor). (transformationtutoring.com)
A liquid with weak intermolecular forces, such as methane, CH4, will have high vapor pressure. (transformationtutoring.com)
Conclusion, intermolecular forces and vapor pressure are inversely proportional. (transformationtutoring.com)
The higher the intermolecular forces the lower the vapor pressure and vice versa. (transformationtutoring.com)
For example, water contains strong hydrogen bonds, so it has a lower vapor pressure than gasoline, which has weaker intermolecular forces acting between its molecules. (sciencenotes.org)

A substance with a high vapor pressure at normal temperatures is often referred to as volatile. (wikipedia.org)
Procedures often consist of purifying the test substance, isolating it in a container, evacuating any foreign gas, then measuring the equilibrium pressure of the gaseous phase of the substance in the container at different temperatures. (wikipedia.org)
With constant pressure but variable temperature, even lower temperatures will cause all vapor to condense to liquid, while a continual increase in temperature will cause the liquid to wholly evaporate (turn to vapor). (academickids.com)
Condensed phases of water occur under a wide range of conditions, ranging from polar mesospheric clouds at the lowest atmospheric temperatures and at low pressure to the much warmer tropospheric clouds. (aip.org)
Easily reaching temperatures up to 310 degrees and pressure levels up to 75PSI, the 300CS cuts through grease, mold, dirt and more. (daimer.com)
Small specimens of 80- and 40-pct-Al2O3 brick and 95-pct-SiO2 brick were exposed to steam in high-pressure furnaces at pressures of up to 1,000 deg and temperatures up to 1,400 deg C for periods ranging up to 120 h. (cdc.gov)
It was concluded that minor silica volatilization is likely to occur, if at all, at temperatures of less than 1,000 deg C and pressures below 1,000 psig, and that low-alumina refractories should be used as dry-ash coal gasifier hot face linings. (cdc.gov)

Vapor pressure is the equilibrium pressure of a vapor above its liquid or solid state in a closed container. (sciencenotes.org)
In an open container, molecules of a liquid that escape as vapor do not strike a container and reach an equilibrium pressure. (sciencenotes.org)

The equilibrium vapor pressure is an indication of a liquid's thermodynamic tendency to evaporate. (wikipedia.org)
Instead, vapor molecules evaporate. (sciencenotes.org)
Since methylene chloride is a volatile organic compound that will evaporate faster when sprayed, brushed, or poured, the chemical vapors can quickly build up in small spaces. (cdc.gov)

Very low vapor pressures of solids can be measured using the Knudsen effusion cell method. (wikipedia.org)

The atmospheric pressure boiling point of a liquid (also known as the normal boiling point) is the temperature at which the vapor pressure equals the ambient atmospheric pressure. (wikipedia.org)
With any incremental increase in that temperature, the vapor pressure becomes sufficient to overcome atmospheric pressure and cause the liquid to form vapor bubbles. (wikipedia.org)
For example, air at sea level, and saturated with water vapor at 20 °C, has partial pressures of about 2.3 kPa of water, 78 kPa of nitrogen, 21 kPa of oxygen and 0.9 kPa of argon, totaling 102.2 kPa, making the basis for standard atmospheric pressure. (wikipedia.org)
As more molecules enter into the gas phase, the Vapor Pressure increases until it reaches equilibrium with the atmospheric pressure (i.e., no net change in Vapor Pressure occurs). (hvacbuster.com)
Saturated vapor pressure occurs at the boiling point temperature, which in turn depends on atmospheric pressure. (sciencenotes.org)
So, at 1 atm of pressure, the saturated vapor pressure of water occurs at 100 ° C (212 ° F). In other words, vapor pressure equals atmospheric pressure at a liquid's boiling point. (sciencenotes.org)
Note vapor pressure equals atmospheric pressure at water's boiling point. (sciencenotes.org)
At its boiling point (100 ° C), the vapor pressure of water is 658.0 torr (atmospheric pressure). (sciencenotes.org)

Inhalation of vapor is not hazardous. (lookchem.com)
The release of hazardous chemical vapors has the potential for severe casualties, and the detection of such chemicals is therefore critically important for homeland security. (sbir.gov)

It is drier outside of the leaf, and the leaf will try to equalize the vapor pressure through transpiration, leading to the release of water vapor through the stomata (tiny pores in the leaf). (pharmout.net)

When I first came across the term Vapor Pressure Deficit (VPD) , I found it difficult to understand. (pharmout.net)
Yet it is important to learn how to measure and manage vapor pressure deficit (VPD), in order to optimise yield. (pharmout.net)
Vapor Pressure Deficit (VPD) means the difference in vapor pressure between the inside of the leaf compared to the vapor pressure outside of the leaf . (pharmout.net)
It is challenging to manage vapor pressure deficit (VPD) in a greenhouse growing environment. (pharmout.net)
Vapor-Pressure Deficit/Differential (VPD) is defined as the difference/deficit between the amount of moisture in the air and the maximum moisture the air can withhold when it is fully saturated. (growdirector.com)
Vapor-Pressure Deficit is pivotal for Greenhouse Regulation in the case of Cannabis Cultivation. (growdirector.com)
Here, we used the latest database of eddy covariance measurements to estimate θ crit across Europe by evaluating evaporative fraction (EF)-SM relationships and investigating the covariance between vapor pressure deficit (VPD) and gross primary production (GPP) during SM dry-down periods. (lu.se)
across Europe by evaluating evaporative fraction (EF)-SM relationships and investigating the covariance between vapor pressure deficit (VPD) and gross primary production (GPP) during SM dry-down periods. (lu.se)

The vapor pressure of any substance increases non-linearly with temperature, often described by the Clausius-Clapeyron relation. (wikipedia.org)
Better accuracy is achieved when care is taken to ensure that the entire substance and its vapor are at the prescribed temperature. (wikipedia.org)
At any given temperature, for a particular substance, there is a pressure at which the vapor of that substance is in equilibrium with its liquid or solid forms. (academickids.com)
At any given pressure, the boiling point of a substance is the temperature at which the vapor pressure of the substance in liquid form equals the total ambient pressure. (academickids.com)
It may be noted that the vapor pressure of a substance in liquid form may be (and, in general, usually is ) different from the vapor pressure of the same substance in solid form. (academickids.com)
This is an exponential function that describes the vapor pressure of a substance as a function of temperature, and uses the enthalpy of vaporization (latent heat) and a constant as parameters. (stackexchange.com)
The constant is dependent on the particular substance, but there is a way to eliminate it from the equation if you can get one data point: the vapor pressure at a specific temperature. (stackexchange.com)
For a pure substance, if you know the enthalpy of vaporization and the boiling point, you an calculate the vapor pressure at any other temperature. (stackexchange.com)
A substance with a high vapor pressure is said to be volatile . (sciencenotes.org)
When a substance is heated to its boiling point, the liquid begins to turn into a vapor. (answers.com)

If pressure is increased, the opposite occurs: Eventually, all vapor will condense to liquid. (academickids.com)
If the temperature is such that the vapor pressure of the liquid is higher than that of the solid, liquid will vaporize but vapor will condense to a solid, i.e. the liquid is freezing . (academickids.com)
Organic vapors with sufficiently low volatility can condense onto existing particles or form new particles (Hallquist et al. (copernicus.org)
Air can only hold a certain amount of water vapor at a given temperature before it starts to condense in the form of liquid vapor (dew, precipitation). (pharmout.net)

Vapor pressure or equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. (wikipedia.org)
At the temperature that equalizes the two vapor pressures, an equilibrium exists between solid and liquid phases . (academickids.com)
Vapor pressure is the pressure of a vapor in equilibrium with its non-vapor phases. (hvacbuster.com)
In the atmosphere, water can be present in liquid and solid phases, but the vapor phase is generally predominant. (aip.org)
We report on the vapor pressure of these water phases with a focus on metastable amorphous solid water and stacking disordered ice in the light of recent experimental findings and discuss possible implications for the atmosphere. (aip.org)

The vapor pressure that a single component in a mixture contributes to the total pressure in the system is called partial pressure. (wikipedia.org)
When the partial pressure of any liquid equals its vapor pressure, the liquid is partially vaporized: liquid and vapor are in equilibrium . (academickids.com)
A systematic study of the Cu-catalyzed chemical vapor deposition of graphene under extremely low partial pressure is carried out. (bath.ac.uk)
Arterial blood gas levels (through an indwelling line [eg, umbilical arterial catheter or preductal peripheral arterial line]): To assess the pH, partial pressure of carbon dioxide (PaCO 2 ) and the partial pressure of oxygen (PaO 2 ) which might be higher in the preductal arterial line. (medscape.com)

Bubble formation in high liquid depths requires a slightly higher temperature due to the higher fluid pressure, due to hydrostatic pressure of the fluid mass above. (wikipedia.org)
This study provides fundamental understanding on the impacts of membrane properties on mass and heat transfer in VPDO, and highlights the centrality of vapor permeability and mechanical robustness in developing high-performance membranes. (columbia.edu)
The arc tube is normally made from translucent alumina (aluminum oxide) ceramics, which can better withstand the high operation temperature and the high chemical reactivity of the hot sodium vapor, compared with lamps glasses. (rp-photonics.com)
The optical emission spectrum is substantially pressure-broadened due to the high collision rates in the dense gas. (rp-photonics.com)
Partly because of the toxic and environmentally problematic mercury, high-pressure sodium lamps are and more and more replaced by alternative solutions in many applications. (rp-photonics.com)
High-pressure mercury vapor arc lamps (a type of high intensity discharge lamps ) are operated with a pressure of the order of one atmosphere and with much increased power densities, so that more mercury is evaporated. (rp-photonics.com)
High-pressure mercury lamps can be used as white light sources e.g. for lighting, but their color tone has a tendency towards the blue-green (a rather high color temperature ), with a deficiency of the spectrum in the red region. (rp-photonics.com)
High-pressure mercury lamps have mostly been used for high-power lighting applications and projection displays. (rp-photonics.com)
Consider a high and wide concrete wall of say 30 cm thickness, covered with a sheet of vapor barrier on one side, and a sheet of say 30 cm thick and effective insulation on the other side. (stackexchange.com)
A volatile liquid has a high vapor pressure and quickly evaporates. (sciencenotes.org)
APF = 25) Any powered, air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate filter. (cdc.gov)
A refining operation that takes low value derivatives from the cat cracking and other processes and unites them in the presence of an acid catalyst to produce a very high octane, low vapor pressure gasoline blending component. (opisnet.com)
Alkylate helps improve the environmental qualities of gasoline - low vapor pressure, zero sulfur content, zero olefin content, zero benzene and a high octane number. (opisnet.com)
Product Brief: Product Brief: HIGH PRESSURE MERCURY LAMPS Description Wattage (W) Operating Voltage (A) Operating voltage (V) Luminous Flux(lm) AV life (h) Base Max. (ecvv.com)
Product Brief: Product Brief: Product: High Pressure Mercury Lamp Model Watt Amp Lumen Color temp. (ecvv.com)
However, at low temperature and/or high pressures the gas becomes a liquid or a solid. (engineeringtoolbox.com)
Vapors are not absorbed through the skin except at very high concentrations. (cdc.gov)
Moreover, because methylene chloride evaporates quickly (it has a high vapor pressure), vapors can collect in the bottom of a bathtub and in the worker's breathing zone when working in the bathtub. (cdc.gov)

The vapor pressure of water depends on its temperature. (sciencenotes.org)

Instead of liquid mercury, a mercury vapor lamp may contain an amalgam. (rp-photonics.com)

of material enriched in relatively volatile Na-species as well as more refractory Ca-species provides evidence for an oxygen-rich fireball based on the vapor pressure of the two species under oxidizing conditions. (osti.gov)

When the ambient pressure equals the vapor pressure of any solid, the solid and vapor are in equilibrium. (academickids.com)
That is because the boiling point is the temperature at which the vapor pressure equals one atmosphere. (stackexchange.com)
The point where the number of molecules escaping the liquid (or solid) equals the number of molecules returning from the vapor phase back to liquid (or solid) is the saturated vapor pressure . (sciencenotes.org)

Ambient vapor pressure of the atmosphere. (cdc.gov)

Vapor deposition technologies include processes that put materials into a vapor state via condensation, chemical reaction, or conversion. (ques10.com)
PLT) thin films were deposited on various substrates by metal-organic chemical vapor deposition technique using a solid delivery system. (aip.org)
LPCVD deposited amorphous silicon dioxide SiO 2 thin films from a new chemical vapor source, diethylsilane (DES), were characterized. (njit.edu)
Reliable identification of chemical hazards in multidimensional datasets is a key challenge for the deployment of effective chemical vapor detection systems. (sbir.gov)
The development of highly sensitive, fast Fourier transform (FFT) detected, frequency encoded quartz crystal microbalance (QCM) arrays is proposed for the detection of low vapor pressure (LVP) chemical components, including toxic industrial chemicals (TICs). (sbir.gov)

When the vapor phase is produced by condensation from a liquid or solid source, the process is called physical vapor deposition (PVD). (ques10.com)
The formation of droplets in low-pressure stages of power steam turbines is due to the nucleation phenomenon and its effects, such as sudden pressure rise, also known as the condensation shock, where the irreversible internal heat transfer causes a drop in the efficiency of the turbine. (ac.ir)

Low-pressure mercury lamps are also used as relatively efficient sources of ultraviolet light for applications like UV curing, lithography, UV spectroscopy , solarium, ozone generation, water sterilization and other germicidal irradiation. (rp-photonics.com)
Relative humidity measures how much water vapor the air currently contains, as compared to what it would contain if saturated. (pharmout.net)
This can show us how much more room there is in the air for more water vapor. (pharmout.net)
A nonvolatile liquid has a vapor pressure lower than that of water and only slowly evaporates. (sciencenotes.org)
Graph of vapor pressure versus temperature for water. (sciencenotes.org)
For example, the vapor pressure of a droplet of water is the same as the vapor pressure of a pool of water. (sciencenotes.org)
The vapor pressure of water at room temperature (25 ° C) is 23.8 mm Hg, 0.0313 atm, or 23.8 torr, or 3.17 kPa. (sciencenotes.org)
At its freezing point (0 ° C), the vapor pressure of water is 4.6 torr. (sciencenotes.org)
The temperature range at which ice or water clouds are observed spans from T = 100 to 300 K with pressures ranging from about 10 −3 mbar to about 1 bar. (aip.org)
Is a water vapor a state of water? (answers.com)
Water vapor is a gas, which is an official state of matter. (answers.com)

The Antoine equation is a pragmatic mathematical expression of the relation between the vapor pressure and the temperature of pure liquid or solid substances. (wikipedia.org)
However, from the definition of mole fraction we can derive a relation between the mole fraction in the vapor (from here on out $\phi$ to avoid confusion between vapor and solution, which is what your mistake is). (stackexchange.com)

Accuracy is also usually poor when vapor pressure is under 10 Torr because of the limitations of the apparatus[citation needed] used to establish the Antoine parameter values. (wikipedia.org)
Measurements were made at the Advanced Photon Source on Beamline 1-ID, where the elemental vapor pressures of Dy over DyI$_3$ and Tm over TmI$_3$ were obtained across the range of partial pressures from 300 mtorr to 700 torr. (nist.gov)

As the temperature of a liquid increases, the attractive interactions between liquid molecules become less significant in comparison to the entropy of those molecules in the gas phase, increasing the vapor pressure. (wikipedia.org)
The lamp can start with a relatively low vapor pressure, which subsequently (within a couple of minutes) increases due to the heating during operation because more of the liquid mercury is evaporated. (rp-photonics.com)
As temperature increases, the vapor pressure of a liquid increases. (hvacbuster.com)
As temperature increases, so does vapor pressure. (hvacbuster.com)
In an open container, vapor pressure rises as temperature increases until the temperature reaches the boiling point. (sciencenotes.org)
As temperature increases, vapor pressure increases. (sciencenotes.org)

How to determine the vapor pressure of a glycerine and propylene glycol mixture? (stackexchange.com)
I am looking to calculate the minimum heat needed to create vapor from a specific mixture. (stackexchange.com)
At what heat will the mixture begin to create vapor? (stackexchange.com)
The volume of the mixture will vary depending on the amount of heat needed to create vapor, i.e. decrease volume if not enough heat is present. (stackexchange.com)
On the other hand, if you just want an estimate and are planning to experimentally adjust the power output from there, you can get a good starting point by assuming that the mixture and the vapor are both ideal. (stackexchange.com)
What is the mole fraction of the liquid mixture if the vapor above the solution is 30% A by moles? (stackexchange.com)

One gets the vapor pressure by solving this equation for p . (academickids.com)
There are several vapor pressure formulas, but two common ones are Raoult's law and the Clausius-Clapeyron equation . (sciencenotes.org)

In Cannabis Cultivation, VPD refers to the difference between the vapor pressure within the plant and the vapor pressure of the surrounding of the plant. (growdirector.com)

APF = 10) Any air-purifying half-mask respirator with organic vapor cartridge(s) in combination with an N95, R95, or P95 filter. (cdc.gov)
APF = 50) Any air-purifying full-facepiece respirator equipped with organic vapor cartridge(s) in combination with an N100, R100, or P100 filter. (cdc.gov)
APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter. (cdc.gov)

This work focuses on the development of a predictive model based on the non-equilibrium lattice fluid (NELF) model using the fractional free volume (FFV) for the gas and vapor sorption into glassy membranes in a large interval of pressure and temperature. (rsc.org)
The developed model enables predicting the effect of pressure and temperature as well as the gas critical temperature on the gas sorption into the glassy membranes without need for any adjustable parameters. (rsc.org)
Aerodynamically-shaped glassy fallout is formed when vapor phase constituents from the nuclear device are incorporated into molten carriers (i.e. fallout precursor materials derived from soil or other near-field environmental debris). (osti.gov)

In this type of closed system, some molecules of a liquid or solid have enough kinetic energy to escape at the surface and enter the vapor (gas) phase. (sciencenotes.org)
Meanwhile, some vapor molecules collide with the liquid or solid surface and change their phase. (sciencenotes.org)
The kinetic energy of vapor molecules causes them to hit the walls and lid of a container, producing vapor pressure. (sciencenotes.org)

However, the graph of natural logarithm of vapor pressure versus temperature is a straight line. (sciencenotes.org)

It is obtained by curve-fitting and is adapted to the fact that vapor pressure is usually increasing and concave as a function of temperature. (wikipedia.org)
The curve between the critical point and the triple point shows the ethylene boiling point with changes in pressure. (engineeringtoolbox.com)

Mercury (Hg) is the only elementary metal which has a substantial vapor pressure at room temperature. (rp-photonics.com)

Although the PP membrane has a less effective transport pathway, the considerably larger pore size yields a much higher Knudsen diffusivity that results in consistently higher vapor fluxes across different temperature-pressure conditions. (columbia.edu)

The temperature also affects vapor pressure. (hvacbuster.com)

It relates to the balance of particles escaping from the liquid (or solid) in equilibrium with those in a coexisting vapor phase. (wikipedia.org)
Given a constant temperature, if the pressure is reduced, the equilibrium is changed in favour of the substance's gas phase: The liquid eventually gets totally vaporized. (academickids.com)
Values are given for gas phase at 25 o C /77 o F / 298 K and 1 bara, if not other phase, temperature or pressure given. (engineeringtoolbox.com)
The ethylene phase diagram shows the phase behavior with changes in temperature and pressure. (engineeringtoolbox.com)

Low-pressure sodium lamps (LPS lamps) are normally made with a cylindrical or U-shaped glass tube with a length of several centimeters. (rp-photonics.com)
Sodium vapor lamps produce orange quasi- monochromatic light with only little pressure broadening. (rp-photonics.com)
In low-pressure lamps, the temperature rise is moderate, leading to a substantial, but not dramatic increase of mercury pressure during operation. (rp-photonics.com)
The emission of low-pressure mercury lamps exhibits a characteristic optical spectrum with pronounced spectral lines mostly in the visible and the ultraviolet spectral region, but partly also in the infrared . (rp-photonics.com)

1.1 This test method covers the use of automatic vapor pressure instruments to determine the vapor pressure of liquefied petroleum gas products at a temperature of 37.8 °C, vapor to liquid ratio of 0.5:1, and pressures from 200 kPa to 1550 kPa on a sample volume of 3.33 mL. (saiglobal.com)
however, the precision of the test method (see Section 15 ) has only been determined for a vapor to liquid ratio of 0.5:1, at a temperature of 37.8 °C, and a pressure range from 300 kPa to 1500 kPa. (saiglobal.com)
This test method is not intended to determine the true vapor pressure of LPG samples, but rather determine and report the vapor pressure of LPG at the 37.8 °C temperature and 0.5:1 vapor to liquid ratio as the Test Method D1267 method. (saiglobal.com)

Anatomy3

Organisms1

Chemicals and Drugs4

Analytical, Diagnostic and Therapeutic Techniques and Equipment4

Phenomena and Processes18

Health Care9

High vapor pressure perfluorocarbons cause vesicle fusion and changes in membrane packing. (1/30)

Phenotypic differences in terrestrial frog embryos: effect of water potential and phase. (2/30)

Expanded prediction equations of human sweat loss and water needs. (3/30)

Phenology and growth adjustments of oil palm (Elaeis guineensis) to photoperiod and climate variability. (4/30)

How yield relates to ash content, Delta 13C and Delta 18O in maize grown under different water regimes. (5/30)

Height-related trends in stomatal sensitivity to leaf-to-air vapour pressure deficit in a tall conifer. (6/30)

Transpiration response of 'slow-wilting' and commercial soybean (Glycine max (L.) Merr.) genotypes to three aquaporin inhibitors. (7/30)

Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit. (8/30)

Vapor Pressure

Volatilization

Osmometry

Plant Transpiration

Pressure

Humidity

Steam

Prosopis

Water

Thermogravimetry

Microclimate

Blood Pressure

Plant Stomata

Plant Leaves

Air

Sweating

Weather

Plant Stems

Temperature

Photosynthesis

Carbon Dioxide

Hydrostatic Pressure

Climate

Soil

Thermodynamics

Seasons

Blood Pressure Determination

High vapor pressure perfluorocarbons cause vesicle fusion and changes in membrane packing. (1/30)

Phenotypic differences in terrestrial frog embryos: effect of water potential and phase. (2/30)

Expanded prediction equations of human sweat loss and water needs. (3/30)

Phenology and growth adjustments of oil palm (Elaeis guineensis) to photoperiod and climate variability. (4/30)

How yield relates to ash content, Delta 13C and Delta 18O in maize grown under different water regimes. (5/30)

Height-related trends in stomatal sensitivity to leaf-to-air vapour pressure deficit in a tall conifer. (6/30)

Transpiration response of 'slow-wilting' and commercial soybean (Glycine max (L.) Merr.) genotypes to three aquaporin inhibitors. (7/30)

Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit. (8/30)

Vapor pressure

True vapor pressure

Vapor pressure osmometry

Reid vapor pressure

Vapor pressures of the elements (data page)

Water vapor

Chemical vapor deposition

Mercury-vapor lamp

Saturation vapor density

Vapor etching

Strontium vapor laser

Dynamic vapor sorption

Vapor lock

Brazing

Nuclear fallout effects on an ecosystem

Propane

Caesium fluoride

Goff-Gratch equation

Chlorotrifluorosilane

Hydrogen isotope biogeochemistry

List of inorganic compounds

Green solvent

Ionic liquid

Polymer devolatilization

Timeline of lighting technology

Rhenium

Ethylene oxide

Pyrotechnic fastener

Buckminsterfullerene

Phosphoric acid

Vapor-liquid equilibrium

Vapor pressure - Wikipedia

Measurement of equilibrium elemental vapor pressures using x-ray induced fluorescence | NIST

F1052 Standard Test Method for Pressure Testing Vapor Protective Ensembles

ASTM D 6897 : 2016 Standard Test Method for Vapor Pressure of Li

Vapor pressure - Academic Kids

US11702976B2 - Vapor leak pressure relief and diversion system - Google Patents

A predictive model for gas and vapor sorption into glassy membranes at high pressure - RSC Advances (RSC Publishing)

Determination of vapor pressures of hazardous materials with transpiration method, coupled to chromatographic techniques

Vapor Pressure - Part 8 | The Elements Handbook at KnowledgeDoor

Low partial pressure chemical vapor deposition of graphene on copper<...

Low-temperature heat utilization with vapor pressure-driven osmosis: Impact of membrane properties on mass and heat transfer |...

Sodium vapor lamps, explained by RP; low-pressure, high-pressure, optical spectrum, applications, lighting, efficiency

ACP - Saturation vapor pressure characterization of selected low-volatility organic compounds using a residence time chamber

Mercury vapor lamps, explained by RP; low-pressure, high-pressure, optical spectrum, applications, lighting, projection,...

$physical chemistry - Using vapor mole fraction and pressure to determine liquid mole fraction - Chemistry Stack Exchange$ physical chemistry - Using vapor mole fraction and pressure to determine liquid mole fraction - Chemistry Stack Exchange