So I need a check on my calculations for the average number of atoms in a 1 meter cube of atmosphere at STP.(adsbygoogle = window.adsbygoogle || []).push({});

I came up with 88.14 mols, here is how I did it:

First I calculated the average amu using percentage in air by

Nitorgen 78.08% @ 14.007 amu

Oxygen 20.95% @ 15.999 amu

Argon .93% @ 39.948 amu

I took these numbers and multiplied them by their relative percentages to get average amu for atmosphere:

10.94 + 3.35 + .37 = 14.67 amu average

We know the average density of air at STP is 1.293x10^3g/m^3

so I divided by average amu and got 88.14 mols/m^3

Is this right?

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# Need check on calculation for average number of atoms in a m^3 of atmosphere at STP

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