Answer:- 5.199 moles.
Solution:- To do the conversion from number of particles to moles, we use Avogadro number. Given number of particles is divided by Avogadro number and we get the moles.
Avogadro number is [tex]6.022*10^2^3[/tex] . The calculations are given below:
[tex]3.131*10^2^4particles(\frac{1mole}{6.022*10^2^3particles})[/tex]
= 5.199 moles
So, there would be 5.199 moles in [tex]3.131*10^2^4[/tex] particles.
