1. The problem statement, all variables and given/known data An ideal monatomic gas is taken through the above cycle where p1= 2 X 105 Pa and V1 = 5 cm3. During the cycle both the pressure and volume will change such that p2 = 2 p1 and V2 = 4 V1. a) How much work is done by the gas in going from state a to state c along path abc? Wabc = 3 J OK b) What is the change in internal energy in going from b to c? Ubc= J c) What is the change in internal energy during the complete cycle? UTOT = 0 J OK d) What is the change in entropy per mole of gas in going from b to c? ΔSbc = J/K e) What is the change in entropy per mole during the complete cycle? ΔSTOT= 0 J/K OK I am having problems with Parts B and D. 2. Relevant equations PV=NRT Q = nCvdt 3. The attempt at a solution I only have P and V. I cannot use the Ideal Gas Law to calculate n or T because I have two unknowns. I cannot use my Heat Equations because I am still missing n and T. I'm just stuck. If I can calculate B, I think I can get D...I just don't see any way to calculate the Heat in part B. HELP! Thanks.