Question

the mean free path of molecules is given by​

Answer 1

The mean free path is the distance that a molecule travels between collisions.

The mean free path is determined by the criterion that there is one molecule within the "collision tube" that is swept out by a molecular trajectory. The criterion is: λ (N/V) π r2 ≈ 1, where r is the radius of a molecule.

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Answer 2

The mean free path is the distance that a molecule travels between collisions.

The mean free path is determined by the criterion that there is one molecule within the "collision tube" that is swept out by a molecular trajectory. The criterion is: λ (N/V) π r2 ≈ 1, where r is the radius of a molecule.

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