Step 1 a) Use stirred tank model with constants
b) Solution is given with Solution is
Graph of mass of the drug m(t) in mg over time 19610300291.jpg
Graph of concentration of the drug in mg/L over time 19610300292.jpg
c) From the first graph it is visible that steady state mass of the drug is 2000 mg.
Step 5 c) 90% of steady state level drug mass is 1800. Solve to obtain t