Answer:
5.443 formula units
Explanation:
use avagadro's number: 1 mole = 6.022 ×[tex]10^{23}[/tex] particles (in this case formula units)
number of mole × 6.022 ×[tex]10^{23}[/tex] = number of particles
9.039 moles × 6.022 ×[tex]10^{23}[/tex] = 5.443 × [tex]10^{24}[/tex] formula units
