Question

250g of water at 30°C is present in a copper vessel of mass 50g. Calculate the mass of ice required to bring down the temperature of the‘ vessel and its contents to 5°C. 

Specific latent heat of fusion of ice = 336 × 10³Jkg^-1 

Specific heat capacity of copper vessel = 400Jkg^-1°C^-1 

Specific heat capacity of water = 336 × 10³Jkg^-1°C^-1

Answer 1

Let m be the mass of ice