Question

To calculate the heat needed to boil a pot of water at 100 c, what do you need to know?

Answer 1

To calculate the energy which needed to any heating, we need to know:

1. The mass of the heated material (kg), as the water in your problem
2. The specific heat capacity of the material (J/kg.K), it is a specific quantity for each material.
3. The change in the temperature according to the heat process (K)

Then, using the relation of heat energy

$E=mc$ Δ$T$

Note that: the heat capacity is the multiplication of the mass and the specific heat capacity