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AP EAPCET (Engineering) Mean Free Path — practice questions

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The **mean free path** of a gas molecule is:Mean free path of nitrogen at STP (d = 324 pm) is approximately:If P is doubled at constant T (compress gas isothermally), the mean free path:If the mean free path of N₂ at 1 atm is ~80 nm, what is it at 0.01 atm (same T)?