Question

A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300K. The ratio of the average rorational kinetic energy per `O_2` molecules to that per `N_2` molecules is
A. `1:1`
B. `1:2`
C. `2:1`
D. Depends upon momnets of inertia of two molecules .

Answer 1

Both are diatomic gases and thus possess two degree of freedom associated with rotational kinetic energy. At same `T` they have same kinetic energy .