10 grams of sugar dissolved in 190 grams of water Calculate the mass fraction of sugar.

In this case, we are talking about a solution of sugar in water. And therefore, the mass fraction of this substance is determined relative to the total solution, and not water. And therefore we get that the mass of the solution is.

190 g + 10 g = 200 g (The mass of the solution is indicated in grams).

And the proportion can be determined both in mass fractions and in percent.

In mass fractions we get.

10: 200 = 0.05

And as a percentage, you just need to multiply by 100 and get.

0.05 x 100 = 5 (%)

So the correct answer is that this solution contains 5% sugar.