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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...

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 ...

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...

Durgapur

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

Ring nebula

(Encyclopedia)Ring nebula, planetary nebula in the northern constellation Lyra; cataloged as M57 or NGC 6720. It is perhaps the most famous and beautiful nebula of this type. Its name describes the appearance of th...

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...

Bastrop

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

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...