Question

how many atoms of Au are in 3.5 moles of Au

Answer 1

how many atoms make up a mole of anything?

Answer 2

to go from moles to atoms you multiply by avogadros number which is 6.022 x10^23

Answer 3

so 3.5 x 6.022= 21.077

Answer 4

and you don't want to forget the x 10^23 so your final answer is 21.077 x 10^23

Answer 5

or you could say 2.177 x 10^24

Answer 6

incase you need to see the conversion factor written...