Determine the concentration of a non-reactive tracer that was released as a pulse input if: the flow in is 1.5 cms and is equal to flow out, the volume of the reactor is 2250 m3, the tracer was released for 20 min, the initial concentration of the tracer was 0, and the tracer concentration after 1 hour (after the tracer input was stopped) was equal to 8 mg/L.
Derive an expression for the "building" equation for the CSTR if the initial concentration in the tank is not equal to zero (call it C0). Be sure to show all steps.