Performance of a laboratory Reverse Osmosis Unit A feed solution at 25 C contains 3500 mg NaCI/L (density= 999.5 kg/m). The permeability constant Aw= 3.50 x 104 kg solvent/(s m atm) and As= 2.50 x 10-7 m/s. Using a AP =35.50 atm, calculate the fluxes, solute rejection (R), and product solution concentrations in mg NaCI/L. Repeat, but using a feed solution of 3500 mg BaCl2/L. Use the same value of Aw, but As = 1.00 x10-7 m/s.