Question

what is the percentage of CO2 in inhaled and exhaled air?​

Answer 1

Inhaled air contains approx 21% oxygen, 0.04% carbon dioxide and 79% nitrogen while exhaled air contains approx 16% oxygen, 4% carbon dioxide and also 79% nitrogen.

Answer 2

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Here is your answer...

The % of CO2 in inhaled air is approximately 0.04% but in exhaled it's 4.4%.