9. A mass of 1200 kg of fish at 20°C is to be frozen solid at -20°C. The freezing point of the fish is -2.2°C and the specific heats above and

below freezing point are 3.2 and 1.7 kJ/kg.K, respectively. The heat of fusion (the amount of heat needed to freeze 1 kg of fish) is 235 kJ/kg. Find the heat transferred.