chemical element,element,gas 联想词 helium氦;nitrogen氮;gaseous气态的,气体的;oxygen氧气,氧;methane甲烷;methanol甲醇;ammonia氨,阿摩尼亚;sulfur用磺处理;peroxide过氧化物;sulfide化物;fuel得到燃料; 词组| 习惯用语 hydrogen peroxide过氧化 hydrogen production ...
It is the lightest of all gases, and combines with other elements, sometimes explosively, to form compounds. Great quantities of hydrogen are required commercially for the fixation of nitrogen from the air in the Haber ammonia process and for the hydrogenation of fats and oils. It is also ...
Hydrogen definition: a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements. Symbol: H; atomic weight: 1.00797; atomic number: 1; density. See examples of HYDROGEN used in a sentence.
It reacts with nitrogen to form ammonia. With the halogens it forms compounds (hydrogen halides) that are strongly acidic in water solution. With sulfur it forms hydrogen sulfide (H2S), a colorless gas with an odor like rotten eggs; with sulfur and oxygen it forms sulfuric acid. It ...
Detonation decomposition of hydrocarbons to produce hydrogen Alexandr A. Shtertser, Vladimir Yu Ulianitsky, Denis K. Rybin, Igor S. Batraev, Dina V. Dudina Pages 118-123 Article preview Sorry, this component is empty. select article Effects of H<sub>2</sub>, CO, and a gas mixture on...
Figure 3.Characterization of the engine-out exhaust gas conditions as function of the air/fuel ratio λ: (a) Nitrogen oxide emissions, (b) Hydrogen content in the exhaust, (c) Exhaust gas temperature, (d) Exhaust gas mass flow. Measurement points at n = 2000 1/min are visualized as cro...
The element also occurs in the stars and powers the universe through the proton-proton reaction and carbon-nitrogen cycle. Stellar hydrogen fusion processes release huge amounts of energy as they combine hydrogen atoms to form helium, according to Los Alamos. Pure hydrogen gas is scarce in Earth...
The gas combines with the sweep stream to form a permeate that exits from each channel. The remaining feed stream forms a retentate that exits from the housing. The feed stream may consist of syngas containing hydrogen gas and the sweep stream may contain nitrogen gas. A power plant that ...
Nitrogen, a gaseous element N2: Dinitrogen, a chemically inert molecule formed by a strong triple covalent bond between two nitrogen atoms N2O: Nitrous oxide, a significant greenhouse gas Nc: Homocitrate complex; a ring structure comprising part of the iron-molybdenum cofactor of nitrogenase where ...
But, to bring this rapid sketch to a close, I will only add that a certain Hans Pfaal, of Rotterdam, launching himself in a balloon filled with a gas extracted from nitrogen, thirty-seven times lighter than hydrogen, reached the moon after a passage of nineteen hours. View in context By...