do it with the steps plz i tried to understand it

4 (Modified version of Problem 113) Alagoon is to be designed to accommodate an input flow of 0.10 m/s of a non-conservative pollutant with a concentration of 40,0 mg/l, and a reaction rate constant of 0.20 ld. The effluent from the lagoon is to have a concentration of 10.0 mg/l. a Draw a diagram of the pond and write the appropriate mass balance equation b Assuming that the lagoon is well-mixed and at steady state, how large must the lagoon be in units of my C What traction (or percentage of the pollutant is being removed by reaction in the pond