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 peroxide — IUPAC name … Wikipedia
Hydrogen sulfide — Systematic name … Wikipedia
Dissolved gas analysis — or DGA is the study of dissolved gases in insulating fluid. [1] Insulating materials within transformers and related equipment break down to liberate gases within the unit. The distribution of these gases can be related to the type of electrical… … Wikipedia
hydrogen bromide — n a colorless irritating gas HBr that fumes in moist air and that yields hydrobromic acid when dissolved in water … Medical dictionary
hydrogen chloride — n a colorless pungent poisonous gas HCl that fumes in moist air and yields hydrochloric acid when dissolved in water * * * a corrosive inorganic acid, HCl; see hydrochloric acid … Medical dictionary
hydrogen fluoride — n a colorless corrosive fuming usu. gaseous compound HF that yields hydrofluoric acid when dissolved in water * * * a corrosive inorganic acid, HF; see hydrofluoric acid … Medical dictionary
hydrogen iodide — n an acrid colorless gas HI that fumes in moist air and yields hydriodic acid when dissolved in water … Medical dictionary
hydrogen chloride — a colorless gas, HCl, having a pungent odor: the anhydride of hydrochloric acid. [1865 70] * * * ▪ chemical compound (HCl), a compound of the elements hydrogen and chlorine, a gas at room temperature and pressure. A solution of the gas in… … Universalium
hydrogen bromide — noun a colorless gas that yields hydrobromic acid in solution with water • Hypernyms: ↑bromide * * * noun : a colorless irritating gas HBr that fumes in moist air and yields hydrobromic acid when dissolved in water and that is formed as a by… … Useful english dictionary
hydrogen chloride — noun a colorless corrosive gas (HCl) • Hypernyms: ↑acid * * * noun : a colorless pungent nonflammable poisonous gas HCl that fumes strongly in moist air and yields hydrochloric acid when dissolved in water and that is obtained primarily as a by… … Useful english dictionary