An effusion experiment requires `40 s` of a certain number of moles of a gas of unknown molar mass
Channel: Doubtnut
Date: 2020-01-19

An effusion experiment requires `40 s` of a certain number of moles of a gas of unknown molar mass to pass through a small orifice into a vaccum. Under the same conditions, `16 s` was required for the same number of moles of `O_(2)` to effuse. What is the molar mass of the unknown gas?