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electrolysis

(Encyclopedia)CE5 Electrolysis: In a typical reaction electrodes are placed in a solution of hydrogen chloride, HCl, which contains both hydrogen and chlorine ions. The battery removes electrons from the anode, ...

compound

(Encyclopedia)compound, in chemistry, a substance composed of atoms of two or more elements in chemical combination, occurring in a fixed, definite proportion and arranged in a fixed, definite structure. A compound...

Durgapur

(Encyclopedia)Durgapur do͝orˈgäpo͝or [key], city, West Bengal state, E central India, on the Damodar River. One ...

Nizhnevartovsk

(Encyclopedia)Nizhnevartovsk nyēzhˌnyĭvärˈtəfsk [key], city (1989 pop. 241,000), N Siberian Russia. The discovery of a huge oil field at nearby Lake Samotlor in 1965 quickly transformed the small village of N...

Mace, chemical spray

(Encyclopedia)Mace, chemical spray device used by police in riot control. Mace is ordinary tear gas (chloroacetophenone, or CN) in a volatile solvent contained in a spray can. It causes severe lacrimation and tempo...

Levelland

(Encyclopedia)Levelland lĕvˈəlăndˌ [key], city (1990 pop. 13,986), seat of Hockley co., NW Tex., on the Llano Estacado; inc. 1926. The economy is based chiefly on oil and gas, agriculture, and the manufacture ...

Liberal

(Encyclopedia)Liberal, city (1990 pop. 16,573), seat of Seward co., SW Kans.; founded 1888, inc. 1945. It is the trade center for a grazing and farm area. Oil and natural gas are extracted, and helium is processed ...

Brownwood

(Encyclopedia)Brownwood, city (2020 pop. 18,862), seat of Brown co., central Tex.; inc. 1876. Its many industries include oil and gas, printing, and the manufacture o...

Welsbach mantle

(Encyclopedia)Welsbach mantle or Welsbach burner [for C. A. von Welsbach], cylindrical framework of gauze impregnated with oxides of thorium and cerium. When heated in a gas flame, it produces a very bright light b...

Bastrop

(Encyclopedia)Bastrop băsˈtrŏpˌ [key], city (2020 pop. 9,711), seat of Morehouse parish, NE La.; founded ...