Answer:
0.623 M
Explanation:
Step 1: Given data
- Percent by mass (%m/m): 7.00 %
- Density of the solution (ρ): 1.071 g/mL
- Molar mass of magnesium sulfate: 120.37 g/mol
Step 2: Calculate the percent by volume (%m/v)
We will use the following expression.
[tex]\%m/v = \%m/m \times \rho = 7.00\% \times 1.071g/mL = 7.50g\%mL[/tex]
Step 3: Calculate the molarity
7.50 g of magnesium sulfate are dissolved in 100 mL of the solution. The molarity is:
[tex]M = \frac{7.50g}{120.37g/mol \times 0.100L } = 0.623 M[/tex]
