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**Earth's atmosphere has roughly four molecules of nitrogen for every oxygen molecule at sea level;**

more precisely, the ratio is 78:21. Assuming a constant temperature at all altitudes (not really very

accurate), what is the ratio at an altitude of 10km? Explain why your result is qualitative reasonable.

more precisely, the ratio is 78:21. Assuming a constant temperature at all altitudes (not really very

accurate), what is the ratio at an altitude of 10km? Explain why your result is qualitative reasonable.

I found this formula, describing nanoparticles in air. I guess it then also can be used for gas molecules?

That way I get approx. 104:33

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