What is the percent by mass of a solution that contains 45.0 g #"KNO"_3# in 295 mL water?
1 Answer
Jun 18, 2017
The solution is 13.3 %
Explanation:
The formula for percent by mass is
#color(blue)(bar(ul(|color(white)(a/a)"% by mass" = "mass of component"/"total mass" × 100 %color(white)(a/a)|)))" "#
We know the mass of the
Calculate the mass of the water
Now we can calculate the percent by mass.