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Ca,symbol for the element calciumcalcium
[Lat.,=lime], metallic chemical element; symbol Ca; at. no. 20; at. wt. 40.078; m.p. about 839°C;; b.p. 1,484°C;; sp. gr. 1.55 at 20°C;; valence +2. Calcium is a malleable, ductile, silver-white, relatively soft metal with face-centered, cubic crystalline
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California State Information
Area (sq mi):: 163695.57 (land 155959.34; water 7736.23) Population per square mile: 231.70
Population 2005: 36,132,147 State rank: 0 Population change: 2000-20005 6.70%; 1990-2000 13.80% Population 2000: 33,871,648 (White 46.70%; Black or African American 6.70%; Hispanic or Latino 32.40%; Asian 10.90%; Other 22.80%). Foreign born: 26.20%. Median age: 33.30
Income 2000: per capita $22,711; median household $47,493; Population below poverty level: 14.20% Personal per capita income (2000-2003): $32,464-$33,415
Unemployment (2004): 6.20% Unemployment change (from 2000): 1.30% Median travel time to work: 27.70 minutes Working outside county of residence: 17.10%
List of California counties:
- US National Parks
- Urban Parks
- State Parks
- Parks and Conservation-Related Organizations - US
- National Wildlife Refuges
- National Trails
- National Scenic Byways
- National Grasslands
- National Forests
- Marine Sanctuaries
(also, Song Ha), a river in the Democratic Republic of Viet-nam (DRV), originating in Laos. Length, approximately 500km. In its upper reaches, it cuts through spurs of the TruongSon, crosses a maritime plain, and then flows into the Gulf of BacBo (Tonkin) of the South China Sea. The water level is at itshighest during the summer. In its lower course, its waters areused for irrigation. The city of Vinh (DRV) is situated on theriver.
CA(1) (Certification Authority or Certificate Authority) An organization that issues digital certificates (digital IDs) and makes its public key widely available to its intended audience. See digital certificate and cryptography.
(2) See CA Technologies.
(3) (Continuous Availability) See fault tolerant.
(4) (.CA) The country code for Canada. See country code.