|MadSci Network: Physics|
I study chemistry and have to do a physical chemistry test based on P.W. Atkins "Physical Chemistry" book. Usually a pretty good book, but not on this subject. There are 2 kinds of molecular speeds: the root mean square speed which is equal to srqt(3RT/M) and the mean speed which is equal to sqrt(8RT/piM). Because 8/pi is not too far away from 3 the difference between the speeds is not that big, but there is a difference. What is the meaning of the different mean speeds? Why aren't they the same? I've asked several people but nobody can explain the difference to me.
Re: The difference between the root mean square and the mean speed of molecules
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