An ideal gas undergoes the following Carnot Cycle. It starts ina chamber of volume .0065 m3 and temperature 345 Kelvinand pressure 630 kPa (state 1). It is allowed to expandisothermally to a volume of .01066 m3 (state 2) whileheat is added to the gas.  Then it expands adiabaticallyto a volume of .01784 m3 (state 3). Then, it iscompressed isothermally to a volume of Vf m3(state 4) while heat is extracted from the gas.  Finally,it returns to its initial state in an adiabaticprocess.  (The gamma of the gas, γ =1.28,  Cv = 3.5R).
How much heat is added in the 1st isothermal processand the efficiency of this engine?
a.)1.878 kJ, 11.2%
b.) 2.029 kJ, 11.2%
c.) 2.029 kJ, 13.6%
d.) 2.334 kJ, 13.6%
e.) 2.334 kJ, 15.8%
