The irreversible gas-phase reaction A +B → C + D is carried out in an isothermal packed bed reactor. The feed is equimolar, with CA0 = CB0 = 2 mol/L. The initial volumetric flow rate is 4 L/s. The reaction is first order with respect to A and first order with respect to B, and the rate constant is 0.01 L mol-1 s-1. The pressure drop parameter, α, is 0.0015 kg-1. Starting from the differential form of the design equation, what is the percent conversion of A, expressed to one decimal place. if 400 kg of catalyst are used in the reactor? Note that this problem may be solved either using a math solver (Matlab, Polymath, etc) or by hand. You are encouraged to try both methods.