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Hydrogen - Wikipedia
Hydrogen is a chemical element with symbol H and atomic number 1. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.Hydrogen is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Non-remnant stars are mainly composed of hydrogen in the plasma state.The most common isotope of hydrogen, termed protium ...
hydrogen | Properties, Uses, & Facts | Britannica.com
Hydrogen: Hydrogen, a colorless, odorless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The earliest known chemical property of hydrogen is that it burns with oxygen to form water; indeed, the name hydrogen is derived from Greek words meaning ‘maker of water.’
Facts About Hydrogen - Live Science
The most abundant element in the universe, hydrogen is also a promising source of "clean" fuel on Earth. Pure hydrogen gas is scarce in Earth's atmosphere and any hydrogen that actually enters the ...
Hydrogen | H2 - PubChem
Hydrogen is a colorless, odorless gas. It is easily ignited. Once ignited it burns with a pale blue, almost invisible flame. The vapors are lighter than air. It is flammable over a wide range of vapor/air concentrations.
Hydrogen - definition of hydrogen by The Free Dictionary
A colorless, highly flammable element, that occurs as a diatomic molecule, H 2, the lightest of all gases and the most abundant element in the universe, used in the production of synthetic ammonia and methanol, in petroleum refining, in the hydrogenation of organic materials, as a reducing atmosphere, in oxyhydrogen torches, in cryogenic research, and in rocket fuels.
Hydrogen - Element information, properties and uses ...
Hydrogen also has many other uses. In the chemical industry it is used to make ammonia for agricultural fertiliser (the Haber process) and cyclohexane and methanol, which are intermediates in the production of plastics and pharmaceuticals.
Hydrogen - EERE: Alternative Fuels Data Center Home Page
Hydrogen. Hydrogen, when used in a fuel cell to provide electricity, is an emissions-free alternative fuel produced from diverse energy sources. Currently, drivers of fuel cell electric vehicles (FCEVs) can fuel up at retail stations in less than 5 minutes and obtain a driving range of more than 300 miles. Research and commercial efforts are under way to expand the limited hydrogen fueling ...
Hydrogen | Article about hydrogen by The Free Dictionary
The first chemical element, symbol H, in the periodic table, atomic number 1, atomic weight 1.00797; under ordinary conditions it is a colorless, odorless, tasteless gas composed of diatomic molecules, H 2; used in manufacture of ammonia and methanol, for hydrofining, for desulfurization of petroleum products, and to reduce metallic oxide ores.
Hydrogen - fueleconomy.gov
Hydrogen. Hydrogen (H 2) can power passenger vehicles in two ways.. Fuel cell vehicles (FCVs) turn hydrogen and oxygen from the air into electricity, powering an electric motor.; It can also be burned in internal combustion engines (ICEs). The potential environmental and energy security benefits of using hydrogen are significant.
hydrogen - Wiktionary
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