50 mL of a gas A diffuse through a membrane in the same time as for the diffusion of 40 mL of a gas B under identical pressure temperature conditions. If the molecular weight of `A = 64` that of B would be

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 :

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

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

127 mL of a certain gas diffuses in the same time as 100 mL of chlorine under the same conditions. Calculate the molecular weight of the gas.

127 mL of a certain gas diffuses in the same time as 100 mL of chlorine under the same conditions. Calculate the molecular weight of the gas.

If 240mL of a gas X diffuses through a porous membrane in 20 min whereas the same volume of methane diffuses in 10 min at the same temperature and pressure, the molar mass in g mol^(-1) of gas X is

180 mL of a hydrocarbon diffuse through a porous membrane in 15 minutes, while 120 mL of SO_2 under identical conditions diffuse in 20 minutes. What is the molecular mass of the hydrocarbon ?