What are the permanent gases in the air?
| November 30, 2020 | education
nitrogen N2 – 78%
oxygen O2 -21%
argon Ar-0.93%
carbon dioxide CO2 – 0.03%
neon Ne -0.0018%
helium He-0.0005%
krypton Kr-0.0001%
hydrogen H2 – 0.00005%
xenon Xe -0.000009
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