1. Choose the right one. Explain short. Solving a nonisothermal, adiabatic plug flow reactor questions involves what type of equations? a. A single linear algebraic equation b. Two simultaneous nonlinear algebraic equations c. A single ordinary differential equation d. Two simultaneous ordinary differential equations

2. Choose the right one. Explain short. The energy required to pump the materials through the reactor is included in the energy balance in which term? a. T, Temperature b. H, Enthalpy c. F, Molar flowrate d. Ws, Shaft work

3. Choose the right one. Show your steps. A CSTR is cooled by an external cooling jacket. The CSTR operates at 70oC and the cooling jacket has a surface area of 4.2 m2 , an overall heat transfer coefficient U of 68 J/m2 s oC and an inlet coolant temperature of 15oC, the coolant has a mean heat capacity of 30 J/mol K and flows at a rate of 10 mol/s. Calculate the temperature of the coolant at the exit a. 70oC b. 15oC c. 49oC d. 33oC