Environment & Ecology · Environmental Science
The composition of clean dry air (major gases) at ground level is approximately:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Nitrogen = 21% by volume, Oxygen = 78% by volume
- 2Nitrogen = 70% by volume, Oxygen = 10% by volume
- 3Nitrogen = 50% by volume, Oxygen = 40% by volume
- 4Nitrogen = 78.09% by volume, Oxygen = 20.95% by volume✓
Correct answer
Nitrogen = 78.09% by volume, Oxygen = 20.95% by volume
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