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The mean free path of oxygen gas molecul...

The mean free path of oxygen gas molecules at STP is `9.5 times 10^-6 cm` What is the time interval between two successive collisions of a molecule? Atomic weight of oxygen=32 and `R=8.3 times 10^7 erg.mol^-1.K^-1`

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The correct Answer is:
`2.06 times 10^-10s`
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