Heat and thermodynamics worksheet Problems on Specific Heat Capacity 1. How much energy is needed to warm 5.0 kg of blood in a child's body from 34C to 370C? (Assume that blood has the same specific heat capacity as water). 2. How many joules of energy are lost when 865g of aluminium cools from 120C to 550C? (Specific heat capacity = 8.80 x 102 J/kg/K). 3. If 0.20 kg of water at 90C is mixed with 0.50 kg of water at 16C, what is the final temperature of the mixture? 4 . If 100 g of water at 950C is poured into a 500g glass cup, what is the final temperature of the water and the cup? (Specific heat capacity of glass = 8.42 x 102 J/kg/K)