Another quick physics question...?

Question

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 2260 J/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

Answer 1

probably e.