A plastic ice tray has 16 sections filled with water. When placed in the ice box, the water freezes to form ice cubes. Each section contains a mass of 20 g of water that is initially completely liquid at a temperature of 0 °C. The specific latent heat of fusion of ice is 330 J/g. (i) Calculate the amount of energy that must be taken from the tray of water to enable all the water in the tray to become ice at 0 °C. (ii) State why the heat capacity of the plastic tray does not affect the answer to (i).(iii) The ice box takes energy from the water at a rate of 30W. Estimate the time taken for all the water in the tray to become ice.