mersenneforum.org > Math Inconsistencies on Wikipedia?
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2008-08-28, 21:40   #2
bsquared

"Ben"
Feb 2007

13×257 Posts

Quote:
 Originally Posted by ShiningArcanine I apologize if asking here is inappropriate, but this is the only place that I know where I can ask math/math-related questions and expect to receive some sort of answer, so I thought I would ask here.
I'm not trying to tell you to go away, but here is another possible venue for this question, which also seems to have lively participation by knowledgable people:

http://www.physicsforums.com/

I can't be any more helpful at the moment, sorry.

 2008-08-28, 22:03 #3 michaf     Jan 2005 1110111112 Posts With (1) pV=nRT (n is given in moles) and (2) pV=NkT (n is given in number of molecules) it implies that nRT=NkT --> nR=Nk --> k=R*n/N Given that k=R/N_a (N_a is the number of Avogadro, # molecules per mole) this gives that N_a equals N/n I think you got disoriented by the different kinds of n's.
 2008-08-28, 22:25 #4 ATH Einyen     Dec 2003 Denmark 32·331 Posts It seems ok to me. Remember that Molar mass: M = m * NA. Insert that and k=R/NA in vp and the 2 equations are the same. The last two equations implies that N*k = n*R which at first glance looks wrong. But N is not Advogadros constant it is the actual number of molecules: http://en.wikipedia.org/wiki/Ideal_gas_law So N = n*NA, and if you insert above: n*NA*k = n*R or k = R/NA , which is the defenition of k. Edit: Ops I was too slow :) Last fiddled with by ATH on 2008-08-28 at 22:28
 2008-09-02, 20:41 #5 ShiningArcanine     Dec 2005 22×23 Posts Thankyou very much for the explanation. :)

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