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Suppose some wastewater had a BOD5 equal to a 180 mg/L and a reaction rate k equal to 0.22/day. It also has total Kjedahl nitrogen content (TKN) of 30 mg/L. a. Find the ultimate carbonaceous oxygen demand (CBOD). b. Find the ultimate nitrogenous oxygen demand (NBOD). c. Find the remaining BOD (nitrogenous plus carbonaceous) after five days have elapsed.