When we breathe we inhale oxygen, O₂, and exhale carbon dioxide, CO₂, plus water vapor, H₂O. 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? A)The air we inhale has more mass; breathing causes you to lose weight. B)The air we exhale has more mass; breathing causes you to lose weight. C)The air we inhale has more mass; breathing causes you to gain weight. D)The air we exhale has more mass; breathing causes you to gain weight.

Question

Quizplus · Accepted Answer

The air we exhale has more mass because it contains the added mass of carbon dioxide and water vapor, which are products of metabolism. Breathing causes you to lose weight as carbon atoms from food are converted to CO2 and exhaled.

When We Breathe We Inhale Oxygen, O2, and Exhale Carbon

When We Breathe We Inhale Oxygen, O₂, and Exhale Carbon