moles chemistry question

Question

How many moles of gold atoms do 4.50x10^24 gold atoms constitute?

Answer 1

Hello! To convert from atoms of a substance to moles you simply divide by 6.022 x 10²³ (Avogadro's number). 

 

In this case we have 4.50 x 10²⁴ gold atoms, so dividing would give us:

(4.50 x 10²⁴)/(6.022 x 10²³) = 7.47 mol Au

 

I hope this helps!