q1

Choose the one alternative that best completes the statement or answers the question. Show your work for partial credit. 1) Figure] 1} p A heat engine takes 4.0 moles of an ideal gas through the reversible cycle nbm, on the pV diagram, as shown. The path be is an isothermal process. The temperature at r: is 420 K, and the volumes at n and c are 0.02 m3 and 0.23 m3, respectively. The molar heat capacity at constant volume, of the gas, is 39 Ifmol - K. ln Figure 1, for the path m, the heat absorbed by the gas, in k], is closest to: A) 73 B) zero C) 60 D) 60 E) 73