2000 J of heat is required to melt 40 Kg of substance, then the specific latent heat of a substance is _____.
Answer: 50 J/kg
The amount of energy per kg (unit mass) required to change ice to water without a change in temperature is known as the specific latent heat of a substance. It can be determined as follows:
L = Q/m
where Q is the measure of the heat energy and m is the mass.
2000 J/40 Kg = 50 J/kg