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how many moles are in 10 molecules of He?
answer is 1.66 * 10^-24
why isn't it 10 molecules He / 6.02*10^23 molecules He?
or did my professor screw up?
2 Answers
- ?Lv 56 years agoFavorite Answer
Helium doesn't really 'do' molecules... as a noble gas it cruises around as individual atoms. So 10 molecules of He is just 10 atoms of He.
One mole of anything (including elephants) is just Avogadro's Number (6.02 x 10^23) of that thing.
So to find the number of moles in 10 He atoms, just divide 10 by Avogadro's Number. It will be a *very* tiny number indeed.
