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May 22, 2015

Homework Help: College Physics

Posted by Sammy on Saturday, July 13, 2013 at 2:18pm.

7 Moles of a gas initially at temperature 300 K is compressed adiabatically from a volume of 1000 cm3 to a volume of 316 cm3. To the nearest tenth of a kJ what is the work done by the piston? (It is a monatomic ideal gas.)

I have W = (3/2)nRT1(V1^(gamma-1) V2^(1-gamma) times -1)

I tried to set it up and I got 56.4 but the answer was 30.3. Can someone tell me what I did wrong and tell me how to properly calculate it? Thanks!

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