ShahinF8091 ShahinF8091

11-10-2022
Chemistry

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a sample of wastewater is diluted by a factor of 1:10. the diluted wastewater has an initial dissolved oxygen concentration of 7.0 mg/l. after 5 d it has a dissolved oxygen concentration of 3.0 mg/l. the 5-day bod of the initial undiluted wastewater is most nearly

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