SAT Subject Physics Practice Question 366: Answer and Explanation

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Question: 366

62. Ice, which has a temperature of 0°C, is added to 500 g of water that has a temperature of 100°C. Ice is continually added to the system until it has all melted and no more ice will melt. What is the temperature of the water in the system?

A. 50°C
B. 25°C
C. 4.184°C
D. 1°C
E. 0°C

Correct Answer: E


The correct answer is (E). The phase change to melt the ice drains all the heat from the water. At 0°C ice will no longer melt because all the heat has been removed from the water.

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