2) 40 kg of dough at 8C contained in a box is to be frozen to -18C in a freezer. Calculate the heat required to be removed. The latent heat of freezing of the dough is 280 kJ/kg. The specific heat of dough is 3.6 kJ/kgC above freezing and 1.9 kJ/kgC below freezing. The freezing temperature of dough is -4C. The container box is 1.2 kg and is made up of polyethylene, whose specific heat is 2.3 kJ/kgC.