The Molar Mass of an Unknown Gas Was Measured by an Effusion

question 97

Multiple Choice

The molar mass of an unknown gas was measured by an effusion experiment.It was found that it took 60 s for the gas to effuse,whereas nitrogen gas required 48 s.The molar mass of the gas is

• A)25 g/mol.
• B)35 g/mol.
• C)18 g/mol.
• D)31 g/mol.
• E)44 g/mol.

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