4-22 bald eagle creek flows into bald eagle reservoir, which acts as a completely mixed reactor. bald eagle creek has a flow rate of 0.20 m3/s and a dissolved oxygen concentration of 4.75 mg/l. bald eagle reservoir has a volume of 104 m3. oxygen is removed in the lake through biological processes, and the reaction rate, kd, is 0.06 day–1. evaporation removes water from the surface of the lake at a rate of 0.002 m3/s. determine the effluent flow rate and dis- solved oxygen concentration for this completely mixed lake.