How many atoms of neon gas would a container with a volume of 67.2 L hold at STP?

1 Answer
anor277
May 9, 2016

The molar volume of an Ideal Gas at #STP# is #22.4*L#.

Explanation:

So all we have do is divide the actual volume by the molar volume, and mulitply that number by #N_A", Avogadro's number"#, which is the number of particles in one mole of particles:

Thus:

#"Number of atoms " =" " (67.2*L)/(22.4*L*mol^-1)xxN_A#

#=(67.2*L)/(22.4*L*mol^-1)xx6.022xx10^23*mol^-1#

#=3xxN_A# neon atoms. Neon, as a Noble gas, is an atomic species, though here the atoms are gaseous and not associated.

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