what does the air we breathe out contain compared to the air we breathe in?

the same elements except that

-the ammount of CO2 inceases to 4%(not certain about the value)

-the oxygen ammount decreeases to 16%

-the water vapour ammount also increases

Composition Of Exhaled Air

The air we breathe out has a little more carbon dioxide and water, a little less oxygen than the air we breath in. Also, sometimes the air we breath in contains contaminants and germs. These items are mostly filtered out by cilia and mucous unless they are overwhelmed as in when people smoke cigaretts.

"air" is composed of the following which we breathe in

Nitrogen, N2 (78%)

n Oxygen, O2 (21%)

n Argon, Ar (0.9)

n Carbon Dioxide, CO2 (365 ppm)

also there is always some water content in what we breathe in if the air is humid

and we breath out mostly water vapor and carbon dioxide

The composition of air we breathe in is roughly:

80% nitrogen

nearly 20% oxygen

and about 0.4% carbon dioxide

and traces of other gases

air we breathe out consists of:

80% nitrogen

about 16% oxygen

4% carbon dioxide

and traces of other gases

The air we inhale is roughly 78% nitrogen, 21% oxygen and 1% argon, helium, carbon dioxide, and other gases.

The air we exhale is roughly 78% nitrogen, 16% oxygen, 4% carbon dioxide, 1% argon, helium, other gases, and 1% Water Vapor.

Carbon dioxide is available in exhaled air and this is transformed from oxygen as it is absorbed by the tissue from blood and converted to CO2

air we inhale consists of:

21% oxygen (O2)

78% nitrogen (N2)

0.9% argon (Ar)

very little carbondioxide (CO2), unless you live in a smog area

some watervapor

germs, dust and pollen

The air we exhale consists of:

16-18% oxygen (O2)

78% nitrogen (N2)

0.9% argon (Ar)

3-5% carbondioxide (CO2)

somewhat more watervapor

germs, dust and pollen The consistance of these may have been changed as some are (partially) filtered out and new germs may have been added.

when glucose is oxidized it releases CO2. and the oxygen you breath actually becomes water. i dont know what specific experiment was set up to figure this out, but it makes perfect sense.

when we exhale we breathe out CO2 and water vapor

when we inhale we breathe in O2, and a couple other gases (N2, etc)