# How many grams of solute are present in "2500 g" of a sodium hypochlorite solution that is "5.24% m/m" ?

Jun 17, 2017

$\text{130 g}$

#### Explanation:

The solution's percent concentration by mass, $\text{m/m%}$, tells you the number of grams of sodium hypochlorite, your solute, present in $\text{100 g}$ of solution.

In your case, you know that you have

color(blue)(5.24color(red)(%))"m/m NaClO " -> " "color(blue)("5.24 g")color(white)(.)"NaClO for every"color(white)(.)color(red)("100 g of solution")

This means that $\text{2500 g}$ of solution will contain

$2500 \textcolor{red}{\cancel{\textcolor{b l a c k}{\text{g solution"))) * "5.24 g NaClO"/(100color(red)(cancel(color(black)("g solution")))) = color(darkgreen)(ul(color(black)("130 g NaClO}}}}$

The answer must be rounded to two sig figs, the number of sig figs you have for the mass of the solution.