How many ml of oxygen are present in a litre of water?
Correct answer: A. 10
- A. 10
- B. 20
- C. 40
- D. 200
Explanation
Under typical conditions, the solubility of oxygen in water is approximately 8 milligrams per liter (mg/L) or 8 parts per million (ppm). To convert the concentration of dissolved oxygen from milligrams per liter (mg/L) to milliliters per liter (ml/L), we need to consider that 1 milligram is equal to 1 cubic centimeter (cc) or 1 milliliter (ml). Therefore, 8 mg/L is equal to 8 ml/L of dissolved oxygen which is approximately equal to 10 ml.
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