State the molar mass of the unknown gas

Reference no: EM13161100

An effusion container is filled with 7 L of an unknown gas. It takes 173 s for the gas to effuse into a vacuum. From the same container under the same conditions--same temperature and initial pressure, it takes 385 s for 7.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.

Reference no: EM13161100

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