What is the annual cost of operation in a 70degf room if, Ask an Expert

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It is recommended that home refrigerators maintain an internal temperature of around 40°F for safe food storage. Assuming that the typical refrigerator operates at 20% of the ideal efficiency and that electricity costs $0.10 / (kW hr), what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F? Show work.

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Category:- Chemistry
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