51. One mole of an ideal mono atomic gas is taken through the cycle shown in Figure (8). The process A: B is a reversible isothermal expansion. Calculate (a) the net work done by the gas, (b) the energy added to the gas, (c) the energy expelled by the gas, and (d) the efficiency of the cycle. Plaum) Isothermal Process Yliters) 10 Figure (8)