A heat engine operates using the cycle shown in figure. The working substance is 2.00 mol of helium gas. Process BC is isothermal. Calculate the amount of heat leaving and entering the gas each cycle. a. Heat entering = 41.1 J, Heat leaving = 24.7 J b. Heat entering = 24.7 J, Heat leaving = 41.1 J c. Heat entering = 16.5 J, Heat leaving = 33.0 J d. Heat entering = 33.0 J, Heat leaving = 16.5 J