P$4\mathrm{.}38$ BUG is a brand$-$new and exciting chemical, possessing remarkable insecticide properties, yet biodegradable and nontoxic to birds,

fish, or mammals. Your company is interested in manufacturing BUG, using a newly discovered synthesis scheme involving six

reaction steps. The scheme is top secret because the patent hasn't been issued yet; all you are told is that it requires several

reactants, which are labeled A$,$ B$,$ etc. Each reactor runs under different conditions, so six reactors in series are required. The

reaction scheme, along with fractional conversions achievable, is given below.

You are in charge of evaluating waste production for this synthesis scheme. Sketch out the flow diagram. Per $100$kgmol BUG

produced, calculate the moles of each reactant required and each waste product generated. Assume all reactants are fed at

stoichiometric ratio. Compare your results to what could be achieved if the fractional conversion of all six steps were $1\mathrm{.}0.$ If you

could improve conversion in only one reaction step, which would you choose and why?