please solve this question clearly

A second order reaction where A B takes place in an isothermal, jacketed CSTR. The exothermic reaction occurs at 200C. Heat transfer fluid enters the jacket at 35C. Component A is fed into the reactor at 700 mol/m and a temperature of 50C. The reaction rate constant is 0.0031 m3/(mol-s) and conversion is 87%. AH,x=-12.5J/mol CpA= 10 J/(mol-K) A. Based on mole balance and a volume of 5 m what is the initial flow rate of A? B. What is the heat transfer area if the heat transfer coefficient is 1.85 kJ/(mK-h)