Asked by meeeeeee

Mira analyzed oxygen and carbon dioxide in inhaled and exhaled air. She found that the percentages of both gases were different in each.

What other gas would most likely also have different amounts in inhaled and exhaled air?
ozone (O3)
hydrogen (H2)
water vapor (H2O)
sulfur dioxide (SO2)

All Answers 1

Answered by GPT-5 mini AI
water vapor (H2O)

Exhaled air is more humid than inhaled air because moisture from the respiratory tract evaporates into the air during breathing. Ozone, hydrogen and sulfur dioxide are not produced by normal respiration.