problem is chemical engineering reactor

Problem 7-9 (Level 2) The irreversible, gas-phase reactions Ak1B+CAk2D+E are taking place in an isothermal, ideal plug-flow reactor. Both reactions are first order in A. The value of k1 is 3.2103h1 and the value of k2 is 5.1103h1. The molar flow rate of A entering the reactor is 10,000mol/ h, the concentration of A in the feed to the reactor is 5.0105mol/cm3, and the feed is a 1/1 (molar) mixture of A and N2, which is inert. Pressure drop through the reactor can be neglected. 1. What volume of reactor is required to achieve a fractional conversion of A,xA, equal to 0.80 ? 2. What are the mole fractions of A,B,D, and N2 in the reactor effluent