What is the composition of the air which we inhale and exhale?
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Answer:
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Step-by-step explanation:
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Inhaled and exhaled air differ principally in their composition and element proportions because both experienced different processes.
Atmospheric air, which we breathe, is basically composed of the following elements: Nitrogen, Oxygen, Carbonic Gas and Gaseous Water (humidity).
When we inhale it, as the air passes through our airways, it occurs an exchange between our cells and air, during inspiration, the atmospheric air which we inhale is exposed to CO2 formed in a constant process used for generating energy which diffuses constantly from the blood of the pulmonary capillaries into the alveoli, during process, cells will take a bit of oxygen from air and leave as a remind a little bit of CO2, also there is a significant humidification of the air.
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Question = What is the composition of the air which we inhale and exhale?
Ur ans= Composition of Inhaled and Exhaled Air
Gases we Breathe In
We all are aware that our atmosphere is a mixture of gases and it contains 78% nitrogen, 21% oxygen, 1% argon, 0.04% carbon dioxide, 0.5% water vapour. When we breathe in, we inhale the same mixture of gases contained in the atmosphere as our nose cannot filter out the oxygen from other gases.
During the respiration process, the total composition of the air that we breathe in also depends on our surrounding environment. Let say, the underwater divers inhale air containing more oxygen or helium. Similarly, the spacesuits worn by astronaut supplies pure oxygen for them to breathe in space.
Gases we Breathe Out-
Stand in front of a mirror and breath out. You will see a film of moisture appearing on the mirror surface. Have you ever wondered where do these water droplets come? It is the same air that we inhale. As mentioned earlier the air which we breathe in contains 0.05% water vapour. Therefore, the film of moisture formed on the mirror surface is because of the water vapour content in the air.
When we exhale, the composition of the air remains almost the same as the air we inhale, only the percentage of carbon dioxide and oxygen changes. The amount of inhaled air contains 21% of oxygen and 0.04% of carbon dioxide, while the air we breathe out contains 16.4% of oxygen and 4.4% of carbon dioxide. This is because our cells use oxygen from the inhaled air to release energy and give out carbon dioxide as a byproduct.
This was a brief introduction to the composition of gases during respiration. Stay tuned with BYJU’S to learn more about Gases
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