How much heat energy has to be supplied to 2 kg of ice so that it melts at 0^ C ? [latent heat of fusion of ice is 3.35 10^2 ~kJ Kg ⁻¹

Step-by-step solution

The heat energy Q required to melt a mass m of a substance at its melting point is given by the formula Q = m L , where L is the latent heat of fusion. Given: Mass m = 2 kg Latent heat of fusion L = 3.35 10^2 kJ kg ⁻¹ = 3.35 10^5 J kg ⁻¹ Substituting the values into the formula: Q = 2 kg 3.35 10^5 J kg ⁻¹ Q = 6.7 10^5 J Answer: 6.7 10^5 ~J