Question

Consider a room air conditioner using a Carnot cycle at maximum theoretical efficiency and operating between the temperatures of 19.7°C (indoors) and 28.7°C (outdoors). For each 1.00 J of heat flowing out of the room into the air conditioner

a) How much heat flows out of the air conditioner to the outdoors?
(in J)

b) By how much does the entropy of the room decrease?
(in J/K)

c) By how much does the entropy of the outdoor air increase?
(in J/K)