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What is the molar mass of a gas if equal volume of oxygen gas and unknown gas take 3.25 and 8.41 minAITS & Test Series Chemistry Question

Question

What is the molar mass of a gas if equal volume of oxygen gas and unknown gas take 3.25 and 8.41 minutes to effuse through a membrane respectively? (A) 112 g/mole (B) 160 g/mole (C) 214 g/mole (D) 306 g/mole

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