Answer :

5.2 x 10^23 formula units are in 0.87 moles of sodium acetate. 

Answer : The number of formula units of sodium acetate is [tex]5.2\times 10^{23}[/tex]

Explanation :

Formula units : It is defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is [tex]6.022\times 10^{23}[/tex]

We are given:

Number of moles of sodium acetate = 0.87 moles

Number of formula units = [tex]0.87\times 6.022\times 10^{23}=5.2\times 10^{23}[/tex]

Hence, the number of formula units of sodium acetate is [tex]5.2\times 10^{23}[/tex]