# physics

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1.7 mol of an ideal gas which starts at 1.6 atm and 50 o C does 2.0 kJ of work during an adiabatic expansion. What is the final volume of the gas?

• physics -

P V^g = constant during an adiabatic expansion.

You need to know the value of the Cp/Cv specific heat ratio, g (usually called gamma) to compute the P dV integral (work done).

Just calling it an "ideal gas" is not enough. Gamma is 7/5 for diatomics and 5/3 for monatomic gases. Both can be ideal in terms of the gas law.

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