Number Density - Examples

Examples

The following table lists common examples of number densities at 1 atm and 20 °C, unless otherwise noted.

Molecular number density and related parameters of some materials
Material Number density (n) Molar concentration (c) Density Molar mass (M)
Units (1027 m−3) or
(1021 cm−3)		 (amagat) (103 mol/m3) or (mol/L) (103 kg/m3) or (g/cm3) (10−3 kg/mol) or (g/mol)
ideal gas 0.02504 0.932 0.04158 41.58×10−6×M M
dry air 0.02504 0.932 0.04158 1.2041×10−3 28.9644
water 33.3679 1241.93 55.4086 0.99820 18.01524
diamond 176.2 6556 292.5 3.513 12.01

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