Difference between revisions of "Density"

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Revision as of 04:18, 4 April 2011

The density (symbol: ρ) or, more strictly, mass density, of a homogeneous system (or material) is the mass per unit volume. It is usually measured in grams per cubic centimetre (g cm−3) for condensed phases (solids and liquids) and in kilograms per cubic metre (kg m−3) for gases: 1 kg m−3 = 1000 g cm−3. Densities of solids and liquids usually range from 0.62 g cm−3 (isopentane) to 22.6 g cm−3 (osmium); densities of gases at normal temperatures and pressures range from 0.085 kg m−3 (hydrogen) to 13 kg m−3 (tungsten hexafluoride). Density, unlike mass or volume, is an intensive property of a system.

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