A three-reactor system linked by pipes is shown in Figure 1. The rate of transfer of chemicals through each pipe is equal to the flowrate (Q, units of m³/s) multiplied by the concentration of the reactor from which the flow comes from (c, units of mg/m³). If one can assume that the system is at steady state and each reactor is a CSTR, develop the mass balance equations to determine the concentrations C1, C2 and C3. 700 mg/s Q13C1 Q33C3 REACTOR 1 REACTOR 3 Q33-120 Q12C1 Q23C2 100 mg/s Q13-40 Q21C2 Q12=90 Q23=60 Q21-30 REACTOR 2 Figure 1 Three reactor system