The postulates of the kinetic molecular theory are related to what?

For a gas,the ratio $C_p/C_v$ is $1.3$ and its atomic mass is $M$. What is the molecular mass of the gas?

$A$ bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends. The white ammonium chloride ring first formed will be:

What is an elastic molecular collision?

With an increase of pressure,the mean free path

The kinetic energy in $J$ of $1$ mole of $N_2$ at $27^{\circ} C$ is: $\left( R = 8.314 \ J \ mol^{-1} \ K^{-1} \right)$