Specific Latent Heat:
- The amount heat energy required to melt or boil 1kg of a material is called the specific latent heat.
It depends on:
- the material
- the state (solid,liquid,gas).
The energy required to boil or melt a certain mass of a material can be found using the following equation:
Energy (J) = Mass (kg) x Specific latent heat (J/kg)
Example 1. The specific latent heat of ice is 330,000J/kg. An ice sculpture with a mass of 10kg is left to melt on a hot day. Calculate the amount of energy required to melt the ice. Using the equation:
Energy = Mass x Specific latent heat
= 10 x 330 000 = 3 300 000J
Comments
Report