Question

Atmosphere consists of 79 percent Nitrogen and 21 percent Oxygen by options 1) volume 2) Weight 3)density 4)all the above​

Answer 1

Answer:

Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.

Explanation:

Answer 2

Atmosphere consists of 79 percent Nitrogen and 21 percent oxygen by 1) Volume.

Explanation:

• Earths's atmosphere is much more than the air we breathe.
• Air is a non homogeneous mixture of different gases.
• Composition in percentage is expressed in two ways: by volume and by mass.

• Earth's atmosphere consists of 79 percent nitrogen, 21 percent oxygen, 0.9 percent argon and 0.1 percent other gases by volume.

• By mass percent, atmosphere consists of 75 percent nitrogen, 23 percent oxygen, 0.05 percent carbon dioxide, 0.0007 hydrogen and other gases including argon, helium, neon etc.