If the solubility product of magnesium hydroxide is 11.25 answerthe
following question. if water at 25-degree c is bufferedsuch that
the ph remains fixed at 7, what is the maximum amount ofsoluble
mg2+, in grams, in 1l of water?

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]