Hey there!
There are 6.022 x 10²³ atoms in one mole.
We have 4.3 x 10²⁴ atoms of Helium.
To find the amount of moles, we divide the number of atoms by the number of atoms in each mole.
(4.3 x 10²⁴) ÷ (6.022 x 10²³)
We get 7.1.
This means there are 7.1 moles in 4.3 x 10²⁴ atoms of He.
Hope this helps!
