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2. The folleaing dissolved icxygen values were forad after 5 days of incubation in 305-ml. B(M) bottles 8.2,8.1, and 8.1 in three hiank semples ard

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2. The folleaing dissolved icxygen values were forad after 5 days of incubation in 305-ml. B(M) bottles 8.2,8.1, and 8.1 in three hiank semples ard 7.4,6.5,4.4,1.3. and 0.0mer. In bordes canteining 0.5,1,2,4, and 8mL of sample, rerpect vely. The plidny dissolved uxygen of the sample was 6.5 mgel. What is the 5 -day BOD of the sample

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