A large tank of unknown volume is initially filled with 6000g of a 10% by mass sodium sulfate solution. Into this tank a 50% sodium sulfate solution is added at a rate of 40g/min. At a single outlet from the tank flows a 20g/L solution at a rate of 0.01667 L/s. Using an integral approach determine the following (Note: You must complete the math clearly in order to receive credit): a) The total mass in the tank after 2 hours. b) The amount of sodium sulfate in the tank after 2 hours.

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