Suppose you mix 20.1 g of water at 66.2°C with 45.1 g of water at 35.7°C in an insulated cup. What is the maximum temperature of the solution after mixing?

Answer 1

heat lost by hot water + heat gained by cold water = 0
heat lostt or heat gain is
mass x specific heat x (Tfinal-Tinitial)

Answer 2

The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 9.50 of silver by 10.5?