Question: Question #2: Overall Mass Balance for an Unsteady-State Process. A storage vessel is well-stirred and contains 500kg of total solution with a concentration of 5.0wt%

$Question \#2: Overall Mass Balance for an Unsteady-State Process. A storage$

Question \#2: Overall Mass Balance for an Unsteady-State Process. A storage vessel is well-stirred and contains 500kg of total solution with a concentration of 5.0wt% salt. A constant flow rate of 900kg/h of salt solution containing 16.67wt is suddenly introduced into the tank and a constant withdrawal rate of 600kg/h is also started. These two flows remain constant thereafter. Derive an equation relating the outtlet withdrawal concentration as a function of time. Also, calculate the concentration after 2.0h

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