Question 387Steam Plants - Assistant Engineer

The correct answer is A) 8 ounces of oxygen dissolved in 1,000,000 ounces of water. This is correct because a dissolved oxygen concentration of 8.0 parts per million (ppm) means that there are 8 units of dissolved oxygen per 1,000,000 units of water. Since the question states "ounces" as the unit, the correct interpretation is that there are 8 ounces of oxygen dissolved in 1,000,000 ounces of water. The other answer choices are incorrect because they do not accurately represent the meaning of a dissolved oxygen concentration of 8.0 ppm in terms of the given units. Options B, C, and D all use incorrect unit conversions or ratios that do not properly reflect the definition of parts per million.