After reaction, a liquid product (heat capacity = 1070 j/kgk) is cooled from 370k to 325k in a countercurrent, single-pass heat exchanger. the production rate is 2130 kg/h. water (heat capacity=4180 j/kgk) is supplied as coolant at 0.185 kg/s and 275k. the overall heat transfer coefficient is 242 w/mk. (a) starting with a word equation, derive the model equations (level iii). (b) calculate the exit temperature. (c) calculate the heat transfer area. (d) do you need the model equations to solve for b and c?