You have 1235.3 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution?

Question

You have 1235.3 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution?

Answer 1

Percent by mass means grams solute per 100 grams of solution. In the present case we have...

3.62 g NaOCl/100 g of solution. Using a simple ratio, we have...

3.62 g NaOCl/100 g soln x 1235.3 g soln = 44.7 g NaOCl (to 3 significant figures)