Question
Download Solution PDFWhat is the correct percentage by volume of various gases in Earth's atmosphere?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 78% nitrogen, 21% oxygen, and 0.03% carbon dioxide and other greenhouse gases.
Key Points
- Composition of the atmosphere:
- The air we take in while breathing is actually a mixture of many gases.
- Nitrogen and oxygen are two gases that make up the bulk of the atmosphere.
- Carbon dioxide, helium, ozone, argon, and hydrogen are found in lesser quantities.
- Apart from these gases, tiny dust particles are also present in the air.
- These dust particles present in the air are commonly referred to as aerosols.
Additional Information
The atmospheric composition of gases by volume is as follows:
|
Permanent Gases of the Atmosphere |
|
|
Constituent |
Per cent by Volume |
|
Nitrogen (N2) |
78.084 |
|
Oxygen (O2) |
20.946 |
|
Argon (Ar) |
0.934 |
|
Carbon dioxide (CO2) |
0.036 |
|
Neon (Ne) |
0.00182 |
|
Helium (He) |
0.000524 |
|
Krypton (Kr) |
0.000114 |
|
Hydrogen (H2) |
0.00005 |
Last updated on Jul 14, 2025
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