1. The problem statement, all variables and given/known data 10 moles of an ideal gas, in the initial state P1 = 10 atm, T1 = 300K are taken around the following cycle. a) A reversible change of state along a straight line path on the P-V diagram to the state P = 1 atm T = 300K. How much work is done during the cycle? 2. Relevant equations Isothermal, ΔU = 0 so w = p dV 3. The attempt at a solution w = p dV and p = nRT/V so w = nRT (dV/V) w = nRT ln(Vf/Vi) = nRT ln(Pi/Pf) w = [(10 moles)* (8.3144 J/ K *mole) * (300K)] ln(10atm/1atm) w = 57.4 kJ but the correct answer is 123.4kJ. Suggestions??