A piece of chocolate cake is burned with oxygen

in a bomb calorimeter. The temperature
of 3368 grams of H2O in the calorimeter is
raised by 0.52 K. What is ∆E, including the
sign, for the combustion of this piece ot chocolate
cake? Assume no heat is absorbed by the
calorimeter. The heat capacity of water is
1.0 cal/g · K and the heat of vaporization of
water is 540 cal/g.
Answer in units of kcal. doctorbob222