How many grams of solute are present in a #"1500-g"# sample of a #3.62%# by mass solution of sodium hypochlorite?
In your case, a solution that is
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.