A certain monoatomic gas with a molecular mass of 39.9 u (in atomic mass units) has a mean free path at atmospheric pressure of 2.39e-06 m.(a) What is the average speed of a molecule of the gas at 312 K?(b) In completely still air, a molecule of the gas is initially at a distance of 0.524 m from your nose. You are standing still. On average, how much time should such a molecule take to reach your nostrils?
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