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We can perform a very simple activity to prove it practically.

Hold a glass in front of your mouth on a cold day and exhale.

You'll find that tiny liquid water droplets will be visible on the surface of the glass.

The water vapour condenses due to the cool temperature of the environment.

This easily proves the question

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Q: How do you know that air exhaled by us contain watervapour?
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Related questions

What does exhaled air contain?

Carbon dioxidenitrogenoxygen


Does exhaled air contain more carbon dioxide or oxygen?

Carbon dioxide.


Does exhaled air contain water?

Yes, exhaled air contains trace amounts of water vapour.people breathe out carbon dioxide


Which gas does the exhaled air contain?

Exhaled air will contain all of the gases in regular air, except that it will have higher percentages of carbon dioxide and lower percentages of oxygen. (It still will have oxygen, or CPR wouldn't work.) It will also have water vapor from our lungs. The main gas in inhaled and exhaled air is nitrogen. This is followed by oxygen, then carbon dioxide, then other gases. Yes, there is still more oxygen exhaled than carbon dioxide, but at a smaller percentage than was inhaled. Chances are that your teacher is looking for the gas, carbon dioxide, as your answer, since that is the product of cellular respiration that is disposed of in exhaled air, but it isn't the main component of exhaled air.


Does inhale air has more oxygen or exhaled air?

Inhaled air is richer in oxygen than exhaled air.


Is carbon dioxide richer in exhaled or atmospheric air?

yes it is the inhaled air is 0.04 %, whereas, of the exhaled air is 4 % (100 times) more


How go you know that the air exhaled by us contains water vapour?

because it condenses into water when your hot breath is exhaled onto a cold object.


What does exhaled air contain more of than inhaled air?

More Oxygen, because some of it is processed into Carbon Dioxide (CO2).


Which air is heavier out of inhaled air and exhaled air?

Exhaled air, which has a slightly higher amount of carbon dioxide, is heavier than inhaled air.


What makes us most of the exhaled air in vertebrates?

Carbon dioxide makes up most of the exhaled air in


How much oxygen does exhaled air contains approximately?

A small percent . exhaled air always contains oxygen .


What makes up most of the exhaled air in vertebrate?

CO2 makes up most of the exhaled air in vertebrates.