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Approximately 70% of the earth's atmosphere is nitrogen and around 14% is oxygen. The rest of our air is made of various trace elements and inert gases. Your question poses various interesting other questions, including the fact that decomposing animal bodies release primarily nitrogen. However, to go a little deeper, most of the nitrogen breathed in is expelled when you exhale. Very little is absorbed by the lungs, some of the nitrogen ends up absorbed by the liver and is passed out through urine, while a little more is exhaled after and entire circulation cycle. Build-up of too much nitrogen can cause various issues, anywhere from muscle cramps, hiccups, yawning and general fatigue. More interesting is the fact that while oxygen is absorbed from the inhalation, carbon dioxide is released. For most people without a deeper understanding, this would make no sense, because it would appear that the oxygen went no where and was not used at all. Again, this is not true. Only a fraction of oxygen inhaled is released. Approximately 8% of each exhale is CO2, while the rest is the un-used atmoshpere, again back to your nitrogen. Also, there's the question of where did the carbon come from to combine with the oxygen being exhaled. Our lungs and cells and blood stream perform a deep Ballet of combining, separating and re-mixing the elements of our atmosphere, taking only what we need and releasing the rest in a new form. Approximately 70% of the earth's atmosphere is nitrogen and around 14% is oxygen. The rest of our air is made of various trace elements and inert gases. Your question poses various interesting other questions, including the fact that decomposing animal bodies release primarily nitrogen. However, to go a little deeper, most of the nitrogen breathed in is expelled when you exhale. Very little is absorbed by the lungs, some of the nitrogen ends up absorbed by the liver and is passed out through urine, while a little more is exhaled after and entire circulation cycle. Build-up of too much nitrogen can cause various issues, anywhere from muscle cramps, hiccups, yawning and general fatigue. More interesting is the fact that while oxygen is absorbed from the inhalation, carbon dioxide is released. For most people without a deeper understanding, this would make no sense, because it would appear that the oxygen went no where and was not used at all. Again, this is not true. Only a fraction of oxygen inhaled is released. Approximately 8% of each exhale is CO2, while the rest is the un-used atmoshpere, again back to your nitrogen. Also, there's the question of where did the carbon come from to combine with the oxygen being exhaled. Our lungs and cells and blood stream perform a deep ballet of combining, separating and re-mixing the elements of our atmosphere, taking only what we need and releasing the rest in a new form.

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Q: Why do you breathe in and out the same amount of nitrogen?
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You breathe out the same amount of nitrogen as you breathe in Why is this?

because the haemoglobin present in our blood has no capacity to absorb nitrogen so the result is that the nitrogen is not absorbed and you breathe out the same amount of nitrogen as you breathed in.......


How much nitrogen does humans breathe out?

78% 0of the air we breathe is nitrogen, same as the amount in the air.


Why do you breathe out the same amount of nitrogen as we breathe in?

Nitrogen is considered as an inert gas, which means that it doesn't react with stuff around it easily. As the body can't take it in, it gets exhaled in the same amount.


What percentage of nitrogen do you breath in ml?

You breathe in about 78 percent nitrogen. The amount that you breathe in varies.


Which gas do you breathe out the most?

The same one you breathe in the most, Nitrogen.


What amount of gases do we breathe out?

Majorly carbon dioxide and Nitrogen


Why do you breathe out as much nitrogen as you breathe in?

Because we do not use the nitrogen we breathe in , so we breathe out as much nitrogen as we breathe in .


Do animals breath nitrogen?

Animals breathe the same stuff as we do, and there is some nitrogen in the atmosphere.


Why doesn't the total amount of nitrogen change?

Nitrogen makes up 78% of air, so we obviously breathe it in and because our body doesnt 'NEED' Nitrogen, so however much you inhale, you can exhale the same amount as none of the Nitrogen is used up. hope it helped ;p x


What do cows breathe in?

The same kind of air you would breathe in, which is that of oxygen, nitrogen and other elements.


What gas do we breathe small amounts of it out?

We breathe out the nitrogen and the oxygen in the air - though the amount of oxygen that goes out is less than the amount that goes in, since part of it is absorbed by our lungs.We also breathe out carbon dioxide, which is a result of our metabolism.


Is it safe to breathe in nitrogen?

yes nitrogen is 80 percent of of the air that we breathe


Is the greatest amount of gas in the air oxygen?

No it isn't. It is Nitrogen, which makes up 70% of the air we breathe.


Can you breathe on Titan?

No. Titan's atmosphere is composed almost entirely of nitrogen with a small amount of methane. There is no oxygen.


Why is there no difference in the amount of nitrogen you inhale and exhale?

The reason is that the body does not use nitrogen gas. When you breathe in, nitrogen gas will enter the blood and circulate around the body without being used up or added to. When it reaches the lungs it will pass out again. Essentially, there is an equilibrium between nitrogen in the air (in the lungs) and nitrogen in the blood: on average, for every nitrogen molecule which diffuses into the blood one will diffuse out. So the amount of nitrogen in the air breathed out is the same as that in the air breathed in.


When exercsing how much oxygen do you breathe out?

The same amount you wil just breathe in more often


Why do you breathe out the same amount of nitrogen you breath in?

Nitrogen is a biologically inert gas, so what you breathe in you eventually breathe back out unchanged. However some nitrogen dissolves in the bodily fluids (e.g. blood) and is absorbed by tissues, remaining in equilibrium with the gas in the atmosphere. Normally this dissolved/absorbed nitrogen presents no problem. However for people working under elevated pressure conditions like caisson workers or sea divers, they must be very careful in returning to normal pressure to let the extra dissolved/absorbed nitrogen be breathed out instead of forming bubbles and causing the bends.


How do astronauts breathe in the space shuttle?

They breathe artificial "air" that is almost the same as the air on Earth. It is made up of 20% oxygen and 80% nitrogen similar to the air we breathe and it is at a pressure of 14.7psi which is the same as the atmospheric pressure on earth.


How do astronauts breathe on the space station?

They breathe artificial "air" that is almost the same as the air on Earth. It is made up of 21% oxygen and 78% nitrogen similar to the air we breathe and it is at a pressure of 14.7psi which is the same as the atmospheric pressure on earth.


Does nitrogen compress like air?

The air we breathe is mostly nitrogen, so yes. Nitrogen acts almost exactly the same as nitrogen mixed with a little oxygen. The major difference is that nitrogen will have less moisture then straight air.


Can nitrogen kill you?

Gaseous nitrogen is harmless to animals. We breathe a lot of in normal air. Of course, if all you breathe is nitrogen, you will die from lack of oxygen.


Why does the amount of nitrogen vary in inhaled and exhaled air?

The nitrogen is not absorbed in your body via lungs. So the amount of nitrogen in inhaled and exhaled air has to be same. Nitrogen protects your body from the harmful effects of 100 % oxygen.


How does cutting trees affect environment?

It reduces the oxygen in the area because humans breathe in oxygen and breathe out nitrogen.[plants breathe in nitrogen and breathe out oxygen for humans.so without trees.Humans will not survive


What do you breathe besides carbon dioxide?

you breathe nitrogen and oxygen


Do you breathe out as much oxygen as you breathe in?

Yes the same amount will leave you as you take in on average but when you breathe out there will be more CO2 and less oxygen as your body uses Oxygen for it's metabolic functioning and releases CO2 in it's place. So yes same amount out as in but in a different form.