1. The problem statement, all variables and given/known data A gas consisting of diatomic molecules that can rotate but not oscillate at a given range of temperatures expands adiabatically from pressure of 365Pa and volume of 70m3, doing 101J of work, while expanding to a final volume. What is its final PV (pressure volume) product? 2. Relevant equations For an adiabatic expansion: W = (1/ϒ-1)(pfvf - pivi) 3. The attempt at a solution i) Degrees of freedom: 3 Therefore, ϒ=1.4 ii) Plug and chug of the equation above. W = (1/ϒ-1)(pfvf - pivi) 101 = (1/1.4-1)(pfvf - 365*70) 101 = 2.5pfvf - 63875 pfvf = 25590 Pa / m3 I'm fairly certain I found the degrees of freedom correctly, and the latter part of my calculations is pretty straightforward... Still getting the wrong answer, however. Chance that the answer is wrong? Or am I approaching the problem incorrectly?