Definitions

# 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 $frac\left\{m^3\right\}\left\{kg\right\}$, $frac\left\{ft^3\right\}\left\{lbm\right\}$ or $frac\left\{mL\right\}\left\{g\right\}$ .

$v = frac\left\{V\right\}\left\{m\right\} = frac\left\{1\right\}\left\{rho\right\}$

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

For an ideal gas,

$v = frac\left\{R T\right\}\left\{P M\right\}$
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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