5.85 of nacl is dissolvedin 250ml of solution what is mass percentageof solute?

Answer 1

a solution of what?
If the solute is water, then its mass is 250g
so the solute 250/(250+5.85) = ___

Answer 2

I don't know how you calculate the mass percent (w/w or m/m)without knowing the density of the solution. The VOLUME of the solution is 250 mL but the mass of the solution is unknown. The mass of the solvent (in this case water I guess) is mass H2O + 5.85 but the mass H2O is not known; hence, the mass of the solution is unknown unless we know the density of the solution. We can calculate the percent w/v with the information listed but not w/w or m/m.

Answer 3

oops my bad. even as I wrote my answer, I was thinking the solute was the water.

DrBob saves the day again!