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Change in internal energy of a gas 
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#1
Nov3008, 02:41 PM

P: 90

1. The problem statement, all variables and given/known data
Two moles of carbon monoxide (CO) start at a pressure of 1.2 atm and a volume of 30 liters. The gas is then compressed adiabatically to 1/3 this volume. Assume that the gas may be treated as ideal. What is the change in the internal energy of the gas? n = 1.2 atm V2 = 10L V1 = 30L Cp = 29.16 J/(mol * K) 2. Relevant equations Q = dU + W 3. The attempt at a solution dU = dQ  dW dU = nCpdT  pdV dT is not known, and I can't go any further. 


#2
Nov3008, 03:19 PM

P: 39

You can find [tex]T_1[/tex] using PV = nRT. You can then use the adiabatic equation [tex]TV^{\gamma}= constant [/tex] to find [tex]T_2[/tex]



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