how much energy is released when 55.0g of water vapor at 100C cools to body temperature (37.0C)
Amount of heat released by water is given by the formula: Q = m*c*t, where m is mass, c is specific heat capacity of water, and t is change in temperature.
m = 55.0 grams = 0.055 kg
c = 4200 Jkg-1K-1
change in T = (100 + 273)K - (37+ 273) K = 63 K
So Q = (0.055*4200 x 63) J
= 14553 J or 14.553 Kj.
1 KJ = 1000 J.
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