I tried using ideal gas law but idk the standard heat pressure of helium. also, since it isn't constant pressure or volume for a), I don't know what to do. thank you.

Question Expansion of 1.00 mol of helium. o find w,a, ou, oH for the following: a) pathway A-B-C-D b) A-D Expansion, but done reversibly and isothermally at b c) A-D Expansion, but done reversibly and adiabatically, 298K 2.504 Pressure Caton) 1.50+ A A 2007 B 050 AD 0.00 + 0.00 5 10 15 20 25 30 Volume(L)