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Molecular oxygen has low solubility in water. The dissolved oxygen (DO) concentration in saturated unpolluted freshwater river at 20 0C is in the vicinity of:

Molecular oxygen has low solubility in water. The dissolved oxygen (DO) concentration in saturated unpolluted freshwater river at 20 0C is in the vicinity of:

1 mg/L

10 mg/L

20 mg/L

50 mg/L

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