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Transport Phenomena

Problem 2.225

Find the mean free path of gas molecules under standard conditions if the Van der Waals constant of this gas is equal to \(b\) \(=40 \mathrm{ml} / \mathrm{mol}\)

Reveal Answer
λ=(2πNA/3b)2/3(kT0/2πp0)=84nm\lambda=\left(2 \pi N_{A} / 3 b\right)^{2 / 3}\left(k T_{0} / \sqrt{2} \pi p_{0}\right)=84 \mathrm{nm}
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