The number of translational degrees of freedom for a diatomic gas is

The ratio of total energy of all molecules of one mole of $O_2$ to the total energy of all molecules of two moles of $He$ at the same temperature is

If the kinetic energy of a monoatomic gas molecule is $\frac{3}{2}PV$,then the kinetic energy of a diatomic gas molecule is:

According to the law of equipartition of energy, the molar specific heat of a non-rigid diatomic gas at constant volume is

Ratio of translational degrees of freedom to rotational degrees of freedom of a polyatomic linear gas molecule is

If hydrogen gas is heated to a very high temperature,then the fraction of energy possessed by gas molecules corresponding to rotational motion is ...........