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kawafis44 · 2008-03-08 11:07:02

1. Calculate the work done by 1 mole of ideal gas in expanding adiabatically from V_1 to V_2 (volumes). Make a qualitative figure of pressure changes as a function volume changes p=p(V).

I will be very grateful for solving this problem because I spent so much time on it and I still do not know how to do it.
Thank you in advance!

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Chris · 2008-03-19 19:26:50

You should start by explaining what you have done.

When I read a problem like this, the first thing I notice are:

(1) Ideal Gas: this means internal energy depends only on temperature, and

(2) Adiabatic: $\delta Q = 0$

So ...

$dU = \delta Q + \delta W$

or

$C_{p}dT = W$

A little hint: $C_{p}=n\overline{C}_{p}$

and: $\overline{C}_{p} = \frac{7}{2}R$

I have some similar problems with solutions here:

http://www.longwood.edu/staff/moorejc/c … ework.html

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george · 2009-06-28 15:24:49

Only V1 and V2 can not be calculated. It takes one of the largest state (p or T) at the beginning or end of relaxation.
george,Romania.

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A community of Physics Phans!

#1 2008-03-08 11:07:02

ideal gas

#2 2008-03-19 19:26:50

Re: ideal gas

#3 2009-06-28 15:24:49

Re: ideal gas

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