What is the ratio of the rate of effusion of hydrogen to the rate of effusion of oxygen?
An equal number of moles of fluorine and helium diffuse into a chamber with no change in pressure or temperature. Calculate to 2 significant figures the diffusion rate of fluorine as a percentage of the diffusion rate of helium?
An equal number of moles of nitrogen and a second gas diffuse into a chamber with no change in pressure or temperature. What is the molar mass of the second gas to the nearest gram per mole if its diffusion rate is two-thirds less than that of nitrogen?