# Question #b83a8

Mar 19, 2017

$\text{110 g solution}$

#### Explanation:

A solution's mass by mass percent concentration, $\text{m/m %}$, sometimes called weight by weight percent concentration, $\text{w/w %}$, tells you the mass of solute present for every $\text{100 g}$ of said solution.

In your case, a $\text{17% m/m}$ hydrochloric acid solution will contain $\text{17 g}$ of hydrochloric acid for every $\text{100 g}$ of solution.

You can use the mass by mass percent concentration as a conversion factor to determine the mass of solution that would contain $\text{19 g}$ of hydrochloric acid

$19 \textcolor{red}{\cancel{\textcolor{b l a c k}{\text{g HCl"))) * overbrace("100 g solution"/(17color(red)(cancel(color(black)("g HCl")))))^(color(blue)("= 17% m/m HCl")) = color(darkgreen)(ul(color(black)("110 g solution}}}}$

The answer must be rounded to two sig figs, the number of sig figs you have for the solution's mass by mass percent concentration and for the mass of hydrochloric acid.