# Specific Gas Constant

Written by Jerry Ratzlaff on . Posted in Constants

Specific gas constant, abbreviated as R, deals with the universal gas constant which is equal to 8.314 joules per Kelvin.

## Formulas that use Specific Gas Constant

 $$\large{ R = \frac{ R^* }{ MW } }$$ $$\large{ R = \frac {p }{\rho \; T} }$$ (ideal gas law)

### Where:

$$\large{ R }$$ = specific gas constant

$$\large{ \rho }$$  (Greek symbol rho) = density

$$\large{ MW }$$ = molecular weight

$$\large{ p }$$ = pressure

$$\large{ T }$$ = temperature

$$\large{ R^* }$$ = universal gas constant ( 8314 J/kmol-K )