Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is___________________?
Correct answer: C. 0.94
- A. 0.14
- B. 0.34
- C. 0.94
- D. 1.4
Explanation
Argon makes up about 0.934% by volume of dry atmospheric air, after nitrogen and oxygen in abundance. Therefore, 0.94% is the appropriate rounded value.
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