Answer:
The molarity is 0.189 [tex]\frac{moles}{liter}[/tex]
Explanation:
Molarity is a measure of concentration of a solution that indicates the number of moles of solute that are dissolved in a given volume. In other words, the molarity indicates the amount of moles of solute that appear dissolved in each liter of the mixture.
Molarity is determined by the expression:
[tex]Molarity (M)=\frac{number of moles of solute}{Volume}[/tex]
Molarity is expressed in units ([tex]\frac{moles}{liter}[/tex]).
So, you need to know the amount of moles of ZnSO₄. Then you must know the molar mass. If:
the molar mass of ZnSO₄ is:
ZnSO₄= 65 g/mol + 32 g/mol + 4* 16 g/mol= 161 g/mol
Then you can apply a rule of three as follows: if 161 g of ZnSO₄ is contained in 1 mole, 13.7 g in how many moles are they?
[tex]moles=\frac{13.7 g*1 mole}{161 g}[/tex]
moles=0.085
Then you know:
Replacing in the definition of molarity:
[tex]Molarity= \frac{0.085 moles}{0.45 L}[/tex]
Molarity=0.189 [tex]\frac{moles}{liter}[/tex]
The molarity is 0.189 [tex]\frac{moles}{liter}[/tex]
