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rhodium

(Encyclopedia) rhodiumrhodiumrōˈdēəm [key], metallic chemical element; symbol Rh; at. no. 45; at. wt. 102.90550; m.p. about 1,966℃; b.p. 3,727±100℃; sp. gr. 12.41 at 20℃; valence +2, +3, +4, +5, or +…

cupric sulfate

(Encyclopedia) cupric sulfatecupric sulfatek&oomacr;ˈprĭk sŭlˈfāt, ky&oomacr;ˈ– [key] or copper (II) sulfate, chemical compound, CuSO4, taking the form of white rhombohedral crystals or…

Jharkhand

(Encyclopedia) Jharkhand, state (2001 provisional pop. 26,909,428), 30,775 sq mi (79,714 sq km), E central India; created in 2000 from S Bihar, which now forms its northern border. Other bordering…

Pietermaritzburg

(Encyclopedia) PietermaritzburgPietermaritzburgpēˌtərmărˈĭtsbûrgˌ [key], city, part and seat of Msunduzi local municipality and capital of KwaZulu-Natal prov., E South Africa, in the foothills of the…

Adirondack Mountains

(Encyclopedia) Adirondack MountainsAdirondack Mountainsădˌərŏnˈdăk [key], mountain mass, NE N.Y., between the St. Lawrence valley in the north and the Mohawk valley in the south; rising to 5,344 ft (…

Labrador-Ungava

(Encyclopedia) Labrador-UngavaLabrador-Ungavalăbˈrədôrˌ-əngāˈvə, –əngävˈə [key], peninsular region of E Canada, c.550,000 sq mi (1,424,500 sq km), bounded on the W by Hudson Bay, on the N by Hudson…

Frick, Henry Clay

(Encyclopedia) Frick, Henry Clay, 1849–1919, American industrialist, b. Westmoreland co., Pa. He worked on his father's farm, was a store clerk, and did bookkeeping before he and several associates…

subsidence

(Encyclopedia) subsidence, lowering of a portion of the earth's crust. The subsidence of land areas over time has resulted in submergence by shallow seas (see oceans). Land subsidence can occur…

tantalum

(Encyclopedia) tantalumtantalumtănˈtələm [key] [from Tantalus], metallic chemical element; symbol Ta; at. no. 73; at. wt. 180.94788; m.p. 2,996℃; b.p. 5,400±100℃; sp. gr. 16.65 at 20℃; valence +2, +3…