If cin $5$ cb$(12$ e

$20\mathrm{.}12$t

$),$ calculate the outfl ow concentration of a

conservative substance $($no reaction$)$ for a single, completely mixed

reactor as a function of time. Use Heun$$s method $($without itera$-$

tion$)$ to perform the computation. Employ values of cb $540$ mg$/$m$3$

$,$

Q $56$ m$3$

$/$min$,$ V $5100$ m$3$

$,$ and c$0520$ mg$/$m$3$

$.$ Perform the com$-$

putation from t $50$ to $100$ min using h $52.$ Plot your results along

with the infl ow concentration versus time.