What Is the Formula for Calculating Molar Density?

[shaakra]

how do you calculate molar density?
in one solution it is calculated as molar density = temperature / (given temperature(which is 95C) * 22.4)
in other words it is molar density = 273/(368 x 22.4) = 0.0331 kg mol /m^3
i don't know which formula is this and what is 22.4? and how they end up with the final units

 

[Borek]

$\frac {kg \times mol} {m^3}$ or $\frac {mol} {m^3}$?

22.4 looks like a molar volume of an ideal gas at STP.