The ratio of the rate of diffusion of helium and methane under indentical conditions of pressure and temperature will be

The ratio of the rates of diffusion of helium and methane under identical condition of pressure and temperature will be _____

Under identical conditions of pressure and temperature

The ratio of the rates of diffusion of helium with respect to methane under similar conditions of constant temperature and pressure is

Ratio of rates of diffusion of He and CH_(4) (under identical conditions):

What is the ratio of the rate of diffusion of helium gas to that of oxygen under identical conditions?

50 mL of a gas A diffuse through a membrane in the same time as for the diffusion of 40 mL of gas B under identical conditions of pressure and temperature. If the molecular mass of A is 128, that of B would be :