How many neon atoms in a #15.8*g# mass of neon gas?
3 Answers
See below..
Explanation:
No. of moles
No. of atoms = (Avogadro's no.)
Well, we know that there are
Explanation:
And we also know (do we?) that a
And so we work out the quotient multiplied by the
Here I have used
We use
Explanation:
Neon has an atomic mass of 20.18. Divide 15.8 grams by the atomic mass to determine the moles of Ne. Then multiply the moles of Ne by Avogadro's number to get the number of atoms.