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1. 400 gallons of an aqueous solution of 15.0wt% sodium chloride (1.0255g/cm3) are mixed with a second aqueous feed solution containing 30.0wt% sodium chloride (1.1952 g/cm3). The final mixture contains 18.0wt% sodium chloride. a. Sketch and fully label the schematic (i.e., include all information - symbols or values of knowns and unknowns, with units - and label each stream to clearly identify all components using either species masses or total masses and species fractions). ( 25 points) b. Find the volume of the second feed solution (in gallons) and the mass of the final mixture (in kilograms). Show all steps of the process to obtain credit. ( 25 points)