Question

What percentage of carbon dioxide in exhaled air?​

Answer 1

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The gas exhaled is 4% to 5% by volume of carbon dioxide, about a 100 fold increase over the inhaled amount. The volume of oxygen is reduced by a small amount, 4% to 5%, compared to the oxygen inhaled.

Answer 2

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ɪᴛ ᴄᴏɴᴛᴀɪɴꜱ 78% ᴏꜰ ɴɪᴛʀᴏɢᴇɴ, 16% ᴏxʏɢᴇɴ & 4% ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ.

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