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April 19, 2014

April 19, 2014

Posted by **Jon** on Wednesday, December 7, 2011 at 8:52pm.

- Physics -
**drwls**, Wednesday, December 7, 2011 at 8:57pmWithout knowing the diffusion coefficient, I have no idea.

You might consider this a "random walk" problem. The product of mean free path and molecular velocity is approximately the diffusion coefficient, D.

The average distance randomly walked is, as I recall,

sqrt (pi*D*t)

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