SAT Subject Physics Practice Question 421: Answer and Explanation

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Question: 421

12. If 360 g of water at 95°C is mixed with 275 g of water at 10°C, what is the resulting temperature of the water?

A. 37°C
B. 49°C
C. 58°C
D. 70°C
E. 82°C

Correct Answer: C


The correct answer is (C). This is a calorimetric problem. Since the ratio of to K is 1 to 1, we will not change temperature scales.

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