A hot solution from an evaporator contains 35 kg of MgSO4 dissolved in water and is sent to a crystallizer, where the solution is cooled to form a hydrate. On cooling, 12% of the original water present evaporates. For a feed solution of 120 kg total, estimate the following: a) Concentration (wt%) of MgSO4 in the feed solution. [3] b) The yield of crystals if the solution is cooled to 333K . [17] c) The percentage (%) of crystals in the yield. (3)