A vessel with 100 g of water at a temperature of `0^(@)C` is suspended in the middle of a room. In 15 minutes the temperature of the water rises to `1.8^(@)C`. When ice equal in weight of the water is placed in the same vessel, it melts during 10 hours. using appropriate appropriate approximations, estimate the latent heat of fusio of ice in cal/g. if the known alue of latent heat of fusion of ice is 80 cal/g, obtain the difference in the two values in cal/g and report this as your answer.

Answer

8