How many atoms are in cm^3 air?
Answer:
Wow... umm that all depends really. Heres a formula to follow...
Calculating n, the number of atoms per cm3 in a piece of material of density d (g/cm3).
n = Nav × d / M
where M is the atomic mass in amu (grams per mol). Thus, for graphite (carbon) with a density d = 1.8 g/cm3, M =12, we get 6 × 1023 atoms/mol × 1.8 g/cm3 / 12 g/mol) = 9 × 1022 C/cm3.
So finding the number of atoms in a 'cm3' of air would be extremely hard as it would depend on the density of the air in the reigon you are trying to find that number in.
Hard question dude!
22.4L = 1 mole = 6 x 10²³ atoms
(6 x 10²³) ÷ 1,000 = 6 x 10^20 atoms/cc
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