Question

How many atoms are there in:
18.016 g of S?

Answer 1

Do you know how many atoms there are in 1 mole?

Answer 2

First work out the moles of S using: moles = mass/molar mass

18.016g / 32.1g mol-1 = 0.561mol (3 sig fig)

Now to work out the amount of atoms, you have to use this: atoms = moles x avagadros number

Avagadros number is the constant of the amount of atoms in 1 mole of any substance. The number is 6.02x10^23

0.561mol x 6.02x10^23 = 3.38x10^23

That mean there is 3.38x10^23 atoms in 18.016g of sulfur.
I hope this helps!

Answer 3

Thank you! :)

Answer 4

Its ok :)