Percentage of argon (by volume) in dry atmospheric air is about________________?
Correct answer: D. 0.94
- A. 0.09
- B. 0.3
- C. 0.57
- D. 0.94
Explanation
Dry air contains approximately 78% nitrogen, 21% oxygen, and 0.94% argon by volume. Therefore, the closest listed value is 0.94%.
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