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For an Ideal Gas , the standard molar volume is the volume that is occupied by one mole of substance (in gaseous form) at Standard Temperature And Pressure (STP) of 273.15 K (H2O freezing temperature) and 101 325 Pa (1 Atmosphere ). It is '''0.022414 m3mol-1''' or '''22.414 L/mol''' and is directly related to the Universal Gas Constant '''R''' in the Ideal Gas Law . Cubic Centimetre s (cm3), a measure of volume one million times smaller than a Cubic Metre , are sometimes also used, to give units of cm3mol-1. The molar volume is usually given for a Solid substance at 298.15 K (temperature of Standard State ). Apart from temperature and density, it depends on phase and Allotrope of the substance. |
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