A refrigerator converts 100 g of water at 20° C to ice at -10° C in 73.5 min. Calculate the average rate of heat extraction in watt. The specific heat capacity of water is 4.2 J g^-1 K^-1 , specific latent heat of ice is 336 J g^-1 and the specific heat capacity of ice is 2.1 J g^-1 K^-1.

In an experiment, 17 g of ice is used to bring down the temperature of 40 g of water at 34° C to it's freezing temperature. The specific heat capacity of water is 4.2 J g^-1 K^-1. Calculate the specific latent heat of ice. State one important assumption made in the above calculation.

Find the result of mixing 10 g of ice at -10° C with 10 g of water at 10° C. Specific heat capacity of ice = 2.1 J g^-1 K^-1, specific latent heat of ice = 336 J g^-1, and specific heat capacity of water = 4.2 J g^-1 K^-1.

A piece of ice of mass 40 g is added to 200 g of water at 50° C. Calculate the final temperature of water when all the ice has melted. Specific heat capacity of water = 4200 J kg^-1 K^-1 and specific latent heat of fusion of ice = 336 x 10³ J kg^-1.