Please help with advanced reaction engineering

A+2B2C takes place in a gas-phase reactor. There is A and B in the feed to the reactor so that FB0=23FA0. There are no inerts in the feed, there is also no C in the feed. Since there is excess B present, the reaction follows first kinetics according to: rA=kfCA 2.1 What is the rate of reaction of C in terms of A ? 2.2 Calculate for the reaction. 2.3 Calculate B. 2.4 Draw up a stoichiometric table for the reactor. 2.5 Express the rate of reaction in terms of the conversion, X. Take into account the change of volume on reaction. Assume that pressure and temperature are constant. 2.6 If the conversion is 54%, the molar flowrate of A in the feed is 1400mol/s, the reactor pressure is 20 bar, the rate constant is 0.14s1 and the reactor temperature is 550K and, solve for the volume of the CSTR for this system