When we breathe we inhale oxygen, , and exhale carbon dioxide, , plus water vapor, O. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?

Question

When we breathe we inhale oxygen,  , and exhale carbon dioxide,  , plus water vapor,  O. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?

Quizplus · Accepted Answer

The air we exhale has more mass because it contains the added mass of the carbon dioxide and water vapor that we exhale. However, breathing does not cause us to lose or gain weight. The mass of air that we inhale and exhale is negligible and does not affect our overall weight.

When We Breathe We Inhale Oxygen, , and Exhale