Determine the specific latent heat

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

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