We wish to explore various reactor setups for the transformation of A into

R$.$ The feed contains $99\%$ A$,1\%$ R; the desired product is to consist of

$10\%$ A$,90\%$ R$.$ The transformation takes place by means of the elementary

reaction

with rate constant k $=1$ literlmol $.$ min. The concentration of active materi$-$

als is

throughout.

What reactor holding time will yield a product in which C$,=0\mathrm{.}9$ moll

liter $($a$)$ in a plug flow reactor, $($b$)$ in a mixed flow reactor, and $($c$)$ in a

minimum$-$size setup without recycle?

can you show me how to find area under grapgh for pfr$?$