The specific heat of melting of ice is 3.4 * 10 ^ 5 degrees J kg. it means that

Specific heat of fusion λ is the amount of heat Q that must be communicated to 1 kg of a substance at the melting point in order to transfer it from a solid state to a liquid. The specific heat of melting of ice λ = 3.4 * 10 ^ 5 J / kg means that in order to transfer 1 kg of ice from a solid state at a temperature of 0 “C to water, 3.4 * 10 ^ 5 J of thermal energy must be spent.