Answer: [tex]1.23\times 10^{23}[/tex] formula units
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{32.5g}{160g/mol}=0.203moles[/tex]
1 mole of [tex]CuSO_4[/tex] contains [tex]6.023\times 10^{23}[/tex] of formula units
Thus 0.203 mole of [tex]CuSO_4[/tex] contains =[tex]\frac{6.023\times 10^{23}}{1}\times 0.203=1.23\times 10^{23}[/tex] of formula units
