The average molecular speed in a sample of ch4 gas is 641, Ask an Expert

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The average molecular speed in a sample of CH4 gas is 641 m/s at 311 K. The average molecular speed in a sample of He gas is ________ m/s at the same temperature. The rate of effusion of He gas through a porous barrier is observed to be 5.97E-4 mol / h. Under the same conditions, the rate of effusion of SO2 gas would be ________ mol / h.

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