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(a) One mole of monatomic perfect gas initially at 400 K and 1000 cm³ undergoes a reversible cyclic process for which w 145 J. Find q and AS for this process.

(b) One mole of monatomic perfect gas initially at 400 K undergoes a reversible adiabatic expansion, for which the work done on the surroundings is 145 J. Calculate deltaS and deltaH.

(c) One mole of monatomic perfect gas is expanded from a pressure of 1.000 atm and a temperature of 400.0 K to a pressure of 0.400 atm. Find the final temperature, T, and 4U if the expansion is adiabatic and reversible.​