If both gases have same temperature so rate of diffusion of `O_2` will be

If both gases ( O_2 and He ) have same temperature so rate of diffusion of O_2 will be

Find the relative rates of diffusion of CO_2 and Cl_2 gases.

Two containers A and B have the same volume. Container A contains 5 moles of O_2 gas. Container B contains 3 moles of He and 2 moles of N_2 . Both the containers are separately kept in vacuum at the same temperature. Both the containers have very small orifices of the same area through which the gases leak out. Compare the rate of effusion of O_2 with that of He gas mixture.