Solves a model
of the kinetic behaviour of a system of consecutive reactions,

,
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,
in a batch reactor at constant volume, numerically, via a 4.
th order
Runge-Kutta method, and plots the four concentrations vs. time.
Suggestions Vary: reaction time (to find steady state),
step size; rate values; initial concentrations
(eg., 30, 2, 10, 8).