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potassium carbonate
(Encyclopedia) potassium carbonate, chemical compound, K2CO3, white, crystalline, deliquescent substance that forms a strongly alkaline water solution. It is available commercially as a white,…Ochoa, Severo
(Encyclopedia) Ochoa, SeveroOchoa, Severosāvāˈrō ōchōˈä [key], 1905–93, American biochemist and educator, b. Spain, M.D. Univ. of Madrid, 1929. After teaching at the universities of Madrid,…ammonium sulfate
(Encyclopedia) ammonium sulfate, chemical compound, (NH4)2SO4, a colorless-to-gray, rhombohedral crystalline substance that occurs in nature as the mineral mascagnite. It is soluble in water and…Fresnel, Augustin Jean
(Encyclopedia) Fresnel, Augustin JeanFresnel, Augustin JeanōgüstăNˈ zhäN frānĕlˈ [key] 1788–1827, French physicist and engineer. He is known for his research on light, especially on conditions…vermilion
(Encyclopedia) vermilion, vivid red pigment of durable quality. It is a chemical compound of mercury and sulfur and is known as red sulfide of mercury; it was formerly obtained by grinding pure…tabun
(Encyclopedia) tabuntabuntäˈbən [key], liquid chemical compound used as a nerve gas. It boils at 240℃ with some decomposition. The liquid is colorless to brownish; its vapors have a fruity odor…mixture
(Encyclopedia) mixture, in chemistry, a physical combination of two or more pure substances (i.e., elements or compounds). A mixture is distinguished from a compound, which is formed by the chemical…metabolism
(Encyclopedia) metabolism, sum of all biochemical processes involved in life. Two subcategories of metabolism are anabolism, the building up of complex organic molecules from simpler precursors, and…glutamic acid
(Encyclopedia) CE5 glutamic acidglutamic acidgl&oomacr;tămˈĭk [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l-stereoisomer occurs in mammalian…carbonyl group
(Encyclopedia) carbonyl groupcarbonyl groupkärˈbənĭl [key], in chemistry, functional group that consists of an oxygen atom joined by a double bond to a carbon atom. The carbon atom is joined to the…Trending
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