How much heat is required to change the temperature of a 15 g aluminum can with 100 g of water from 24.5°C to 55°C?

Heat capacity of aluminium = 0.900 J/g°C

While heat capacity of water = 4.186 J/g°C

Heat = heat gained by water + heat gained by aluminium

Heat gained by water = 100 * 4.186 * 30.5

= 12767.3 Joules

Heat gained by aluminium = 15 * 0.9 * 30.5

= 411.75 Joules

Heat required = 13179.05 Joules or 13.179 kJoules