Question

What is the percentage of oxygen carbon dioxide in inhalation exhalation?

Answer 1

Gas	Inhaled air	Exhaled air
Oxygen	20.95%	16.4%
Carbon dioxide	0.04%	4.0%

• When we intake air, it is a mixture of all gases (air) and the amount of oxygen is more. That is why, we consider as an inhaled air, during respiration.
• The percentage of carbon dioxide increases in exhaled air as compared to that in inhaled air. This is why, carbon dioxide is considered as a exhaled air.
• Some amount of oxygen is also released in the exhaled air which is not utilized by the cells in the body.