Steam at 1 atm and 100 C enters a radiator and leaves as water (at 1 atm and 80 C) . Take the heat of vaporization to be 540 cal/g. Of the total energy given off as heat, what percent arises from the cooling of the water?
A) 100
B) 54
C) 26
D) 14
E) 3.6
Correct Answer:
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