Find the ratio of rates of diffusion of hydrogen and oxygen.

Explanation

Graham.s law for the diffusion of two gases is given as ` (r_1)/(r_2) = sqrt((M_2)/(M_1))`
Substituting the molecular weights, 32 for oxygen and 2 for hydrogen, we get the ratio of rates of diffusion of `H_2 :O_2 = sqrt(32//2) = 4:1`