Write the equation of pressure of an ideal gas in terms of its density.

(N/A) The pressure $P$ of an ideal gas is given by the kinetic theory of gases as:
$P = \frac{1}{3} \rho v_{rms}^2$
Where:
$P$ is the pressure of the gas,
$\rho$ is the density of the gas,
$v_{rms}$ is the root mean square speed of the gas molecules.
Alternatively,using the ideal gas equation $PV = nRT = \frac{m}{M} RT$,we can write $P = \frac{\rho RT}{M}$,where $M$ is the molar mass and $R$ is the universal gas constant.