1. The problem statement, all variables and given/known data An ideal refrigerator utilizes a carnot cycle operating between 0 and 25 degrees celsius. To turn 10 kg of water at 0 degrees celsius into 10 kg of ice at 0 degrees celsius, a) how much heat is exhausted into the room? b) how much energy must be supplied to the refrigerator? 2. Relevant equations coefficient of performance of carnot refrigerator (Kcarnot): Tc/(Th-Tc) n (funky n for efficiency thing)=Wout/Qh [but isn't that for engine] K=Qc/W 3. The attempt at a solution I'm guessing part A is Q so I'd have to find that somehow. And, for part B I think you use the last formula I put here and input Q to find W.