Question

Teacher told the students in class that air is a mixture of gasses. Can you tell which gas by volume is 21% of this mixture?
urgent please​

Answer 1

Answer:

21 percent Is oxygen

Explanation:

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

Answer 2

Oxygen by volume is 21% of  Air

Explanation:

Air is a mixture of gasses and dust particles.

Air contains many gases

Two major gases are

Nitrogen  and Oxygen

Nitrogen is approximate 78 %

and oxygen is  around 21 %.

Then Argon is approximate 0.9%

and Carbon dioxide is about 0.04%

and other gases/dust particles amounts are very less.

Oxygen is very important for our survival.

Animals/Humans need Oxygen to breathe and they leave carbon dioxide.

Hence oxygen gas by volume is 21% of this mixture Air.

Learn More:

teacher told the students in class that air is mixture of gasses .

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