hydrogen content

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• Hydrogen storage — describes the methodologies for storing H2 for subsequent use. The methodologies span many approaches, including high pressures and cryogenics, but usually focus on chemical compounds that reversibly release H2 upon heating. Hydrogen storage is a …   Wikipedia

• hydrogen — /huy dreuh jeuhn/, n. a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements. Symbol: H; at. wt.: 1.00797; at. no.: 1; density: 0.0899 g/l at 0°C and 760 mm pressure. [1785 95;… …   Universalium

• Hydrogen sulfide — Systematic name …   Wikipedia

• Hydrogen safety — covers the safe use and handling of hydrogen. Hydrogen poses unique challenges due to its ease of leaking, low energy ignition, wide range of combustible fuel air mixtures, buoyancy, and its ability to embrittle metals that must be accounted for… …   Wikipedia

• Hydrogen cycle — Hydrogen is one of the constituents of water. It recycles as in other biogeochemical cycles. It is actively involved with the other cycles like the carbon cycle, nitrogen cycle ,sulfur cycle and oxygen cycle as well.Anaerobic fermentation of… …   Wikipedia

• Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …   Wikipedia

• Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …   Wikipedia

• Hydrogen bond — A hydrogen bond results from a dipole dipole force between an electronegative atom and a hydrogen atom bonded to nitrogen, oxygen or fluorine (thus the name hydrogen bond , which must not be confused with a covalent bond to hydrogen). The energy… …   Wikipedia

• Hydrogen vehicle — A hydrogen vehicle is a vehicle that uses hydrogen as its on board fuel for motive power. The term may refer to a personal transportation vehicle, such as an automobile, or any other vehicle that uses hydrogen in a similar fashion, such as an… …   Wikipedia

• Hydrogen-4 — Infobox isotope alternate names = symbol =H mass number =4 mass =4.0279121 num neutrons =3 num protons =1 abundance = halflife =9.93696x10 23 seconds error halflife = background =#eee text color = decay product = decay symbol = decay mass = decay …   Wikipedia

• Hydrogen-5 — Infobox isotope alternate names = symbol =H mass number =5 mass = num neutrons =4 num protons =1 abundance = halflife =8.01930x10 23 seconds error halflife = background =#eee text color = decay product = decay symbol = decay mass = decay mode1 =… …   Wikipedia