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

Answer 1

Nitrogen is a gas that our body does not use. So, when we breathe it in, our body does not process it, and it comes back out. We process oxygen into carbon dioxide, but nitrogen is not used.

Answer 2

The majority of the air you breathe in is nitrogen (I believe the figure is around 75% or so), but the body can't use gaseous nitrogen. Humans (and all animals for that matter) need nitrogen to function, except they can't use nitrogen gas to fulfill this requirement. Animals need solid nitrogen in order to be able to use it, and get it through plants. I'm not an expert on the process, but some bacteria will absorb the nitrogen gas and turn it into another form until plant roots absorb it and turn into useable, solid nitrogen. To answer your question, the reason the body doesn't absorb any nitrogen is because it can't; the lungs absorb oxygen, and will ignore the other gases in the air (nitrogen, carbon dioxide, trace gases like krypton, etc.). Also, the body doesn't get excrete nitrogen gas, but gets rid of it in other ways.

Answer 3

Because you cannot use atmospheric nitrogen directly. Only nitrogen fixing bacteria can use atmospheric nitrogen. These bacteria take in atmospheric nitrogen and convert it into nitrogen containing compounds which plants absorb and use to make amino acids. We get our nitrogen from eating plants and animals in the form of protein which is made up of amino acids (nitrogen containing compounds).

Answer 4

Nitrogen is an inert gas - it does not react readily with other compounds. It does not react with the compounds of your body either (only some specific bacteria can fix nitrogen). So it leaves untached.

Answer 5

because ur body doesnt use nitrogen for anyhting it just exists in the air that your body is pulling oxygen out of
the reason u dont breathe out more is because ur body doesnt produce nitrogen either

Answer 6

Because nitrogen is an inert gas and your body does not
use any of it...
You could replace the nitrogen with helium, hydrogen , argon,
neon or several other gasses and it would do the same...

Answer 7

properly our bodies in basic terms soak up oxygen, and the nitrogen we soak up is in basic terms used to assist the absorbtion of it. nitrogen and different gasses like argon are not used. we are given organic oxygen via fact it quite is believed to be sturdy for the physique.

Answer 8

Because respiration involves exchange 0f Oxygen and Carbon di oxide.In this process some moisture is also added to the air being exhaled.However other gases remain unchanged as they are not part of respiratory processes.

Answer 9

Because you do not absorb much nitrogen, if any, through respiration.

Answer 10

coz human body don't need nitrogen so its like just visit ur lung.