Question

In a certain gas the molecules are 5.0 x10-9 m apart on average, have a mean free path of 5.0 x 10-6 m, and have an average speed of 500 m/s. The rate at which a molecule has collision with other molecules is about:
A) 10-­11 s-1
B) 10-8s-1
C) 1 s-­1
D) 108 s-1
E) 1011 s-1

Answer

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