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4 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)

What percentage of oxygen makes up clean air?

21%

No hints u bum :/

What is the percentage of nitrogen that is in clean air?

78%

No hints :D

What is the primary noble gas in the remaining 1% of air besides oxygen and nitrogen?

Argon

No hints :O

What is the percentage of Carbon Dioxide in clean air?

0.03%

No hints :0