Question
Download Solution PDFWhat is the respective percentage of CO2, N2, and O2 in the atmosphere?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is CO2 = 0.04%, N2 = 78.08%, O2 = 20.95%.
Key Points
- The atmosphere is composed of gases, water vapor, and dust particles.
- The proportion of gases changes in the higher layers of the atmosphere.
- 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.
- Nitrogen is the most plentiful gas in the air(78.08%).
- Plants need nitrogen for their survival.
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Gases Formula Percentage by Volume Nitrogen N2 78.08 Oxygen O2 20.95 Argon Ar 0.93 Carbon dioxide CO2 0.036 Neon Ne 0.002 Helium He 0.0005 Krypto Kr 0.001 Xenon Xe 0.00009 Hydrogen H2 0.00005
Additional Information
- Carbon dioxide:
- Carbon dioxide is another important gas(0.036%).
- Green plants use carbon dioxide to make their food and release oxygen.
- Humans or animals release carbon dioxide.
- Oxygen:
- Oxygen is the second most plentiful gas in the air(20.95%).
- Humans and animals take oxygen from the air as they breathe.
- Green plants produce oxygen during photosynthesis.
Last updated on Jul 1, 2025
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