Question: please help and write neatly A 15mL sample is pipetted directly into a 300mL incubation bottle. The initial DO of the diluted sample is 8.8mgL,

please help and write neatly

please help and write neatly A 15mL sample is pipetted directly into

A 15mL sample is pipetted directly into a 300mL incubation bottle. The initial DO of the diluted sample is 8.8mgL, and its final DO after the 5 -day test is 2.1mg/. The seeded dilution water is separately incubated in a 300-mL bottle for 5 days, and the initial and final DO concentrations are, respectively, 9.0mgL and 7.7mgL. After a long period of time, the sample DO is 0.4mg/L, and it no longer seems to be dropping. The dilution water DO is reduced to 7.2mg/L. Assume nitrification has been inhibited so the only BOD being measured is carbonaceous. a. If the sample and the seeded dilution water are both incubated at 20C for 5 days, what is the BOD5 of the sample? b. Assuming no nitrification effects, estimate the ultimate carbonaceous BOD(L0). c. What would be the remaining BOD after five days have elapsed (Ls) ? d. Estimate the deaeration reaction rate constant kd( day 1)

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