This plots the residence time distribution (RTD) of a series of continuous stirred-tank reactors. The RTD is a function displaying the likelihood that a single particle will spend a certain amount of time in the reactor. For example, if the plot of the RTD is bell-curved, this means that it is more likely that a particle will spend the amount of time corresponding to the center of the bell curve in the CSTR than it will towards the tails of the bell curve. The plot of the RTD of a single CSTR is an exponential decay, whereas the plot of the RTD of multiple CSTRs in series is bell-curved. Note that the plot shown in this simulation is for the RTD of the entire system, that is, how likely a particle will spend a certain amount of time traveling through every CSTR, from first to last.