A hot solution of Ba(NO3 )2 from an evaporator contains 30.6 kg Ba(NO3 )2 /100 kg H2O and goes to a crystallizer, where the solution is cooled and Ba(NO3 )2 crystallizes. On cooling, 10% of the original water present evaporates. For a feed solution of 100 kg total, calculate the following: a. The yield of crystals if the solution is cooled to 290 K (17°C), where the solubility is 8.6 kg Ba(NO3 )2 /100 kg total water. b. The yield if the solution is cooled instead to 283 K, where the solubility is 7.0 kg Ba(NO3 )2 /100 kg total water.