Consider the “clearance” concept for the macroscopic view of chemical removal by kidney. The effective volume in a human body is about 18 liters. The clearance of a person for a specific chemical is K = 2L/hr. (a). Determine the concentration of the chemical in the blood as a function of time. (b). If a person was injected with 1800 mg of the chemical and rushed to the hospital. What is the initial blood concentration of the chemical? (c). What is the chemical concentration 10 hours after the injection (d) If the safety level of the chemical were 1 mg/L, how long would it take for the person to be safely discharged from the hospital?