- #1
grandpa2390
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Homework Statement
1 liter of ideal diatomic gas (allow for rotation but not vibration) at a pressure of 1 atmosphere and a temperature of 300 K is compressed adiabatically to a pressure of 7 atm. What is the volume of the gas after compression?
Homework Equations
PV=NKT
PV=nRT
##U_T##=f/2*NKT
##PV^gamma## where gamma=##(2+f)/f##
The Attempt at a Solution
I am not sure how to go about this. I tried just saying 1/7 of a liter, but that is not right. Professor gave a hint about the 5 degrees of freedom being important and not to use 6... I must have missed something... The only formula I have involving the degrees of freedom is the one for the Energy and the PV gamma. but I am not sure how to do that. I thought I would try plugging in the pressure and volume and then changing the Pressure... But I thought I couldn't . Now I am thinking I can again...