Answer:
6.25 grams is the mass of solute dissolved.
Explanation:
w/w % : The percentage mass or fraction of mass of the of solute present in total mass of the solution.
[tex]w/w\%=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100[/tex]
Mass of the solution = 50.0 g
Mass of the solvent = x
w/w % = 12.5%
[tex]12.5\%=\frac{x}{50.0 g}\times 100[/tex]
x = 6.25 g
6.25 grams is the mass of solute dissolved.
