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Calculate the mean free path of air molecules at STP. The diameter of N2 and O2 is about 3 × 10^-10 m.

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Calculate the mean free path of air molecules at STP. The diameter of N2 and O2 is about 3 × 10-10 m.

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P = 1atm = 1.01 x 105 Pa, kB = 1.38 x 10-23 Jk-1, T = 273 K

From ideal gas law , n = \(\frac{P}{kT}\)

Mean free path of the air molecule,

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