and 300k is compressed until the volume is halved.

there are 3 compressions. isothermal, adiabatic, and isobaric.

a) in which case is the absolute value of the change in interrnal energy of the gas the greatest? least?

Now, would it be different between compressed, and expand?

To answer part a would i apply the first law of thermodynamics to each process? would the adiabatic be the greatest in this case but the least expanding?

Thank you