Definitions

Specific volume

Specific volume

Specific volume (v) is the volume occupied by a unit of mass of a material. It is equal to the inverse of density. Specific volume may be expressed in frac{m^3}{kg} , frac{ft^3}{lbm} or frac{mL}{g} .

v = frac{V}{m} = frac{1}{rho}

where, V is the volume, m is the mass and rho is the density of the material.

For an ideal gas,

v = frac{R T}{P M}
where, R is the specific gas constant, M is the molar mass, T is the temperature and P is the pressure of the gas.

Specific volume may also refer to molar volume.

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