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

1 Answer
Jun 17, 2017

Answer:

#"130 g"#

Explanation:

The solution's percent concentration by mass, #"m/m%"#, tells you the number of grams of sodium hypochlorite, your solute, present in #"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 #"2500 g"# of solution will contain

#2500 color(red)(cancel(color(black)("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.