A well-mixed tank initially contains pure water. The tank has inlet and outlet ports both with a diameter of 1 cm, and the inlet port is 20 cm above the outlet port. Into the tank through the inlet port flows a 10% solution of sodium sulfate dissolved in water with a velocity of 0.1 m/sec that has a density of 1000 kg/m3. (a) After 60 seconds of flow, the solution at the outlet port is measured to contain 14 g of sodium sulfate per liter of solution at a constant flow rate of 0.01 L/sec. Please calculate the number of grams of sodium sulfate in the tank at this time. (b) What is the mass flow rate at the exit port once the system has reached steady state?
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