Question

100ml of 4°C water is heated until it reaches 37°C. Assume that the density of water is 1g/ml and the specific heat capacity of water is 4.2J/g.℃. What amount of heat energy was added to cause this rise in temperature ?​

Answer with explanation

Answer 1

Answer:

Heat added Q = msΔT

m = density x volume

= 100ml x 1g/ml = 100g

s = 4.2J/g°C

ΔT = Tf - Ti = 37°C - 4°C = 33°C

Q = msΔT = 100 x 4.2 x 33 = 13860J

The heat needed for the given situation is 13860J