help on e & f

2-4 The exothermic reaction of stillbene (A) to form the economically important trospophene (B) and methane (C), i.e., AB+C was carried out adiabatically and the following data recorded: The entering molar flow rate of A was 300mol/min. (a) What are the PFR and CSTR volumes necessary to achieve 40% conversion? (VPFR=72dm3, VCSTR=24dm3 ) (b) Over what range of conversions would the CSTR and PFR reactor volumes be identical? (e) What conversion can be achieved if a 24dm3CSTR is followed in a series by a 72dm3PFR ? (f) Plot the conversion and rate of reaction as a function of PFR reactor volume up to a volume of 100dm3