Respuesta :
solution = solute + solvent
% mass of solute:
[tex]\tt \dfrac{mass~solute}{mass~solution}\times 100\%[/tex]
for % mass of solute = 2.38%, then mass of solute:
[tex]\tt =2.38\%\times 500~g=\boxed{\bold{11.9~g}}[/tex]
solution = solute + solvent
% mass of solute:
[tex]\tt \dfrac{mass~solute}{mass~solution}\times 100\%[/tex]
for % mass of solute = 2.38%, then mass of solute:
[tex]\tt =2.38\%\times 500~g=\boxed{\bold{11.9~g}}[/tex]