math lessons - Calcium carbonate

01-04-2007 01:18:14
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**Properties**
General
Name	Calcium carbonate
Chemical formula	Ca CO₃
Appearance	White solid
Physical
Formula weight	100.1 amu
Melting point	Liquifies under high pressure at 1612 K (1339 °C)
Boiling point	decomposes at 1172 K (899 °C)
Density	2.7 ×10³ kg/m³
Crystal structure	Calcite, aragonite or vaterite
Solubility	0.0013 g in 100g water
Thermochemistry
Δ_fH⁰_liquid	-1154 kJ/mol
Δ_fH⁰_solid	-1207 kJ/mol
S⁰_solid	93 J/(mol·K)
Safety
Ingestion	Low hazard for accidental ingestion.
Inhalation	Low hazard, may cause problems in the long term.
Skin	Low hazard.
Eyes

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