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What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?

What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?
asked 221k views
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What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?

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User Siddharth Dushantha
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2 Answers

10 votes
1. We breathe out CARBON DIOXIDE
2. Consequently, we exhale 16% of oxygen and 4% carbon dioxide
answered
User Tmhalbert
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8.2k points
1 vote
We breathe out carbon dioxide it’s percentage in exhaled air is about 4%-5% by its volume
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User Hardmath
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