Question

Calculate the amount of heat given out by 600 g of aluminium while cooling from 100^oC to 30°C. (Sp. heat cap. of aluminium = 900 J/kgK.)

Answer 1

Change in temperature = (100-30) = 70°C = 70 K
Amount of heat given out, Q = m x C x T
= 0.6 x 900 x 70 = 37800 J