Question

If the specific heat of water is 4.186 kJ/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?

Answer 1

This will require'' 266.9kJ'' of heat energy 

To calculate the energy required to raise the temperature of any given substance, here's what you require:

The mass of the material, m