# How many grams of solute are present in a #"1500-g"# sample of a #3.62%# by mass solution of sodium hypochlorite?

##### 1 Answer

#### Explanation:

A solution's percent concentration **by mass** is a measure of the number of grams of solute present **for every** **of solution**.

In your case, a solution that is **by mass** sodium hypochlorite will contain **for every** **of solution**.

As you know, solutions are *homogeneous mixtures*, which implies that they have the same composition throughout. This allows you to use the percent concentration by mass as a **conversion factor** to help you find the number of grams of solute present in

More specifically, you will have

#1500 color(red)(cancel(color(black)("g solution"))) * "3.62 g NaClO"/(100color(red)(cancel(color(black)("g solution")))) = color(darkgreen)(ul(color(black)("54 g NaClO")))#

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