• Figure P3.4.4 is a drawing of an artificial kidney, a medical device used to remove residual metabolites from the blood in cases of kidney dysfunction. The dialysate passes through a hollow membrane, and waste products diffuse from the blood into the dialysate. If blood entering the unit flows at a rate of 220 mL/min and blood leaving the unit at a rate of 215 mL/min, how much water and urea (the major waste product) enter the dialysate if the concentration The input urea is 2.30 mg/mL and the output is 1.70 mg/mL? If dialysate flows into the unit at a rate of 1500 mL/min, what is the concentration of urea in the dialysate?