2. Pollution is flowing into the network of reactors shown below. Water is flowing from the left to the right in each reactor. What is the final effluent concentration of the pollutant? Clin=50 mg ** V =2,000 L kq=0.2 0-1 Q=30 L 0-1 C3,out=? mg L-1 Vz=5,000 L kz=0.1 d-2 Cz.in=100 mg L1 V2=300 L Q2=100 L 0-1 K2=0.5 d-1