MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryGaseous stateGraham's Law of Diffusion and effusion
A certain gas effuses through a small opening of a vessel at a rate which is exactly one-fifth the rate at which helium does the same. Thus, the molecular weight of the gas is
A.100✓ Correct
B.75
C.50
D.25
Explanation
He x x He r MW r MW 5 4 MW 100 MW
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