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OpenStudy (anonymous):
A sample of N2 gas is contaminated with a gas (A) of unknown molar mass. The partial pressure of each gas is known to be 200 torr at 25 C. The gases are allowed to effuse through a pinhole, and it is found that gas A escapes at 2 tmes the rate of N2. The molar mass of gas A is:
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OpenStudy (aaronq):
because their partial pressures are the same, you can use graham's law \(\dfrac{v_2}{v_1}=\sqrt{\dfrac{M_1}{M_2}}\)
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