What is the percentage of oxygen in the inhaled air?

18%

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16.4%

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20%

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21%

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Solution

The correct option is D 21%
21%

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Similar questions

The percentage of oxygen in inhaled air is ___________.

The percentage of oxygen in inhaled air is 21%.

What is the percentage of oxygen in the air we inhale?

the percentage of oxygen in inhaled air is about

a-21% b-16%

c-79% d-4%

which one is correct?

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