(30)4. You are to analyze the hydrodynamic character of a compartment aeration tank by injecting a pulse of lithium chloride tracer in the influent. From the time and output concentration data listed below, (a) Plot the tracer response curve C(kg/m3) versus t(min). (b) Calculate the location of the mean residence time, t, variance of the curve 2, and the number of completely mixed tanks in series that is represented by the distribution. represented by the distribution