(a)[3]
Use kinetic theory to explain why thermal energy is needed during melting even though the temperature does not change.
(b(i))[2]
If no thermal energy is transferred to the surroundings, show that the can and the warm water lose $2.3 \times 10^4\,\text{J}$ of thermal energy.
(b(ii))[2]
Use the result from (i) to determine a value $L$ for the specific latent heat of fusion of ice.