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

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

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

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

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 with respect to methane under similar conditions of constant temperature and pressure is

The rate of diffusion of methane is twice that of the following gas under the same conditions