Figure is a sketch of an artificial kidney, a medical device used to remove waste metabolites from the blood in cases of kidney malfunction. The dialyzing fluid passes across a hollow membrane, and the waste products diffuse from the blood into the dialyzing fluid. If the blood entering the unit flows at the rate of 220 mUmin. and the blood exiting the unit flows at the rate of 215 mL/min, how much water and urea (the main waste product) pass into the dialysate if the entering concentration of urea is 2.30 mg/mL and the exit concentration of urea is 1.70 mg/mL? If the dialyzing fluid flows into the unit at the rate of 1500 mUmin, what is the concentration of the urea in the dialysate? Figure: Hollow-Fiber Artificial Kidney

Blood Out Dialysate In Dialysate Out Blood In