1. The problem statement, all variables and given/known data An ideal gas, Cp = (5/2)R, Cv = (3/2)R, is changed from P1 = 1 Bar and V1t = 12m^3 and V2t = 1m^3 by the following mechanically reversible processes: a) Isothermal compression b) Adiabatic compression followed by cooling at constant temperature c) Adiabatic compression followed by cooling at constant volume d) Heating at constant volume followed by cooling at constant pressure e) cooling at constant pressure followed by heating at constant volume find Q, W, ΔU, ΔH, and sketch a PV diagram for each process. 2. Relevant equations PV=nRT For isothermal process (a): Q = -W = RTln(V2/V1) for isobaric processes: Q = ΔH = ∫Cp dT Adiabatic Processes: TV^(γ-1) = const, TP^(1-γ)/γ = const, PV^γ = const, for Isochoric processes: Q = ΔU = ∫Cv dT 3. The attempt at a solution I know that ΔU = 0 and ΔH = 0 moles aren't given. I can't find any way to get the initial temperature, which is needed for most of the calculations.