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Haber process

(Encyclopedia)Haber process häˈbər [key], commercial process for the synthesis of ammonia, NH3. Pure hydrogen and nitrogen gases are mixed in the appropriate proportion, heated to between 450℃ and 600℃, comp...

Groningen, province, Netherlands

(Encyclopedia)Groningen grōˈnĭng-ən [key], province, c.900 sq mi (2,330 sq km), NE Netherlands, bordering on ...

Merapi, Mount

(Encyclopedia)Merapi, Mount məräˈpē [key] [Indonesian=mountain of fire], volcano, 9,551 ft (2,911 m) high, central Java, Indonesia, 20 mi (32 km) NNE of Yogyakarta. It is the most active of Indonesia's many vol...

Ordos

(Encyclopedia)Ordos ôrˈdōs [key], Mandarin Erdesi, sandy desert plateau region, c.35,000 sq mi (90,650 sq km), Inner Mongolian Autonomous Region, N China; almost encircled by the great northern bend of the Huang...

kiln

(Encyclopedia)kiln kĭl, kĭln [key], furnace for firing pottery and enamels, for making brick, charcoal, lime, and cement, for roasting ores, and for drying various substances (e.g., lumber, chemicals). Kilns may ...

Port Arthur, city, United States

(Encyclopedia)Port Arthur, city (1990 pop. 58,724), Jefferson co., SE Tex., on Sabine Lake; inc. 1898. A deepwater port of entry on the Sabine-Neches Canal, it is an extensive oil port, with many large refineries, ...

carbide

(Encyclopedia)carbide, any one of a group of compounds that contain carbon and one other element that is either a metal, boron, or silicon. Generally, a carbide is prepared by heating a metal, metal oxide, or metal...

carbon tetrachloride

(Encyclopedia)carbon tetrachloride tĕˌtrəklôrˌəmĕthˈān [key], CCl4, colorless, poisonous, liquid organic compound that boils at 76.8℃. It is toxic when absorbed through the skin or when inhaled. It react...

sublimation, in chemistry

(Encyclopedia)sublimation sŭblĭmāˈshən [key], change of a solid substance directly to a vapor without first passing through the liquid state. The term is also used to describe the reverse process of the gas ch...

Taman Peninsula

(Encyclopedia)Taman Peninsula təmänˈ [key], c.20 mi (30 km) long and 8 mi (12.9 km) wide, Krasnodar Territory, SE European Russia, projecting westward between the Sea of Azov and the Black Sea. It is separated f...