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A ground water source contains 0mg/l of O2, we need to gasify using a 10 steps (0.4m) cascade aerator. Determine the final concentration of O2

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A ground water source contains 0mg/l of O2, we need to gasify using a 10 steps (0.4m) cascade aerator. Determine the final concentration of O2 knowing that the aerators works at 20C

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