B) hydrogen
C) oxygen
Chemistry, 16.06.2020 18:57 peggycab4201
Which gas makes up the highest percentage of air?
A) nitrogen
B) hydrogen
C) oxygen
D) carbon dioxide
Answers: 1
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You know the right answer?
Which gas makes up the highest percentage of air?
A) nitrogen
B) hydrogen
C) oxygen
B) hydrogen
C) oxygen
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