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  • Air and Its Constituents
  • What is the percentage of argon in the air?
Multiple choice

What is the percentage of argon in the air?

  1. 21%

  2. 0.03%

  3. 0.04%

  4. 0.9%

  5. 78%

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The percentage of argon in the air is 0.9%.

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