In a tank full of oxygen, how many molecular diameters d (on average) does an oxygen molecule travel (at 1.00 atm and 21.0°C) before colliding with another O2 molecule? (The diameter of the O2 molecule is approximately 3.60 10-10 m.)(adsbygoogle = window.adsbygoogle || []).push({});

>> I don't know why webassign is telling me this is wrong and I can't figure out what I'm doing wrong. I used this equation:

l=1/[(2^.5)(pi)(d^2)(nsubv)]

Since n subv is equal to N/V which is equal to P/kb*T, I got 2.49e25.

Then I just plugged everything in... and got 1.43e7 and divided by the diameter to see how many times it would cross that distance... and I got 3.98e16

What did I do wrong??

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# Homework Help: Mean Free Path

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