• atmospheric
  • One of the regular alarm stories that comes from the global warming machine is that atmospheric methane with soon run amok and cause a tipping point. (wattsupwiththat.com)
  • Clearly, nature isn't cooperating with IPCC science as atmospheric methane trends have fallen well below even the lowest range of all the IPCC scenarios. (wattsupwiththat.com)
  • And yet, despite these alarming stories, according to the IPCC report showing observations versus the models in figure 1.7, atmospheric methane concentration isn't accelerating, nor is it currently within the forecast bounds of any of the IPCC climate models. (wattsupwiththat.com)
  • reactive
  • As a first assumption, methane should float away also, but it is reactive and I do not know its chemical rate of conversion at different temperatures, pressures, light irradiation, catalysis if present and in unspecified surroundings. (wattsupwiththat.com)
  • fairly
  • The energy levels of hydrogen can be calculated fairly accurately using the Bohr model of the atom, which conceptualizes the electron as "orbiting" the proton in analogy to the Earth's orbit of the Sun. However, the atomic electron and proton are held together by electromagnetic force, while planets and celestial objects are held by gravity. (wikipedia.org)
  • Lots of hydrocarbons (C2H2 is acetylene, C2H4 is ethylene, and CH4 is methane), all fairly nontoxic but flammabe/explosive in certain mixtures with oxygen. (spaceengine.org)
  • gases
  • Depending on the quality of the feedstock (natural gas, rich gases, naphtha, etc.), one ton of hydrogen produced will also produce 9 to 12 tons of CO2. (wikipedia.org)
  • carbon black
  • Further, if soaked in liquid oxygen, some materials such as coal briquettes, carbon black, etc., can detonate unpredictably from sources of ignition such as flames, sparks or impact from light blows. (wikipedia.org)
  • atom
  • As the only neutral atom for which the Schrödinger equation can be solved analytically, study of the energetics and bonding of the hydrogen atom has played a key role in the development of quantum mechanics. (wikipedia.org)
  • The ground state energy level of the electron in a hydrogen atom is −13.6 eV, which is equivalent to an ultraviolet photon of roughly 91 nm wavelength. (wikipedia.org)
  • A more accurate description of the hydrogen atom comes from a purely quantum mechanical treatment that uses the Schrödinger equation, Dirac equation or even the Feynman path integral formulation to calculate the probability density of the electron around the proton. (wikipedia.org)
  • CH4 + H2O → CO + 3 H2 In a second stage, additional hydrogen is generated through the lower-temperature, exothermic, water gas shift reaction, performed at about 360 °C: CO + H2O → CO2 + H2 Essentially, the oxygen (O) atom is stripped from the additional water (steam) to oxidize CO to CO2. (wikipedia.org)
  • occurs
  • Dibenzothiophenes (see drawing), tricyclic heterocycles consisting of two benzene rings fused to a central thiophene ring, occurs widely in heavier fractions of petroleum. (wikipedia.org)
  • global
  • Determination of rates of microbial activity is essential for evaluating the impact of crustal biosphere microbial activity on global elemental budgets and for understanding the mechanisms for growth and survival of life in this environment. (frontiersin.org)
  • cause
  • The destruction of the Hindenburg airship was a notorious example of hydrogen combustion and the cause is still debated. (wikipedia.org)
  • Because of its cryogenic nature, liquid oxygen can cause the materials it touches to become extremely brittle. (wikipedia.org)
  • water
  • Like the previous process, the formation of hydrogen from oil is done with a water-gas shift reaction. (wikipedia.org)
  • They take up simple substances such as water, carbon dioxide, and oxygen, as well as inorganic nutrients and produce biological molecules needed for life from the inorganic substances. (scribd.com)
  • plays
  • Hydrogen plays a particularly important role in acid-base reactions because most acid-base reactions involve the exchange of protons between soluble molecules. (wikipedia.org)
  • powerful
  • Liquid oxygen has a pale blue color and is strongly paramagnetic: it can be suspended between the poles of a powerful horseshoe magnet. (wikipedia.org)
  • source
  • Liquid oxygen has an expansion ratio of 1:861 under 1 standard atmosphere (100 kPa) and 20 °C (68 °F), and because of this, it is used in some commercial and military aircraft as transportable source of breathing oxygen. (wikipedia.org)
  • common
  • The most common isotope of hydrogen, termed protium (name rarely used, symbol 1H), has one proton and no neutrons. (wikipedia.org)
  • although
  • Liquid oxygen was also used in some early ICBMs, although more modern ICBMs do not use liquid oxygen because its cryogenic properties and need for regular replenishment to replace boiloff make it harder to maintain and launch quickly. (wikipedia.org)
  • second
  • The United Nations sounded a stark warning on the threat to the climate from methane in the thawing permafrost as governments met for the second day of climate change negotiations in Doha, Qatar. (wattsupwiththat.com)
  • energy
  • The C−S bond dissociation energy for thiomethane is 89 kcal/mol (370 kJ/mol) compared to methane's 100 kcal/mol (420 kJ/mol) and when hydrogen is replaced by a methyl group the energy decreases to 73 kcal/mol (305 kJ/mol). (wikipedia.org)
  • away
  • The reason for this difference is the higher electronegativity for oxygen drawing away electrons to itself at the expense of the aromatic ring current. (wikipedia.org)
  • long
  • Air forces have long recognized the strategic importance of liquid oxygen, both as an Oxidizer and as a supply of gaseous oxygen for breathing in hospitals and high-altitude aircraft flights. (wikipedia.org)
  • times
  • The First Assessment Report (FAR) projection has methane at 5 times the current value, and each subsequent IPCC report lowered the projection by about half each time, and they still missed it . (wattsupwiththat.com)
  • liquid
  • The tetraoxygen molecule (O4) was first predicted in 1924 by Gilbert N. Lewis, who proposed it to explain why liquid oxygen defied Curie's law. (wikipedia.org)
  • Many modern rockets use liquid oxygen, including the main engines on the now-retired Space Shuttle. (wikipedia.org)
  • The first measurable quantity of liquid oxygen was produced by Polish professors Zygmunt Wróblewski and Karol Olszewski (Jagiellonian University in Kraków) on April 5, 1883. (wikipedia.org)
  • high
  • The hydrogen autoignition temperature, the temperature of spontaneous ignition in air, is 500 °C (932 °F). Pure hydrogen-oxygen flames emit ultraviolet light and with high oxygen mix are nearly invisible to the naked eye, as illustrated by the faint plume of the Space Shuttle Main Engine, compared to the highly visible plume of a Space Shuttle Solid Rocket Booster, which uses an ammonium perchlorate composite. (wikipedia.org)
  • storage
  • Hydrogen is a concern in metallurgy as it can embrittle many metals, complicating the design of pipelines and storage tanks. (wikipedia.org)