What is the volume of solution with 0.82g/L concentration when the mass of the solute is 7g?
The idea here is that the concentration of the solution tells you the number of grams of solute present for every
This solution is said to have a concentration of
Now, you know that you have a sample of this solution that contains
Consequently, you can use the concentration of the solution to determine how many liters would contain
#7 color(red)(cancel(color(black)("g solute"))) * overbrace("1 L solution"/(0.82color(red)(cancel(color(black)("g solute")))))^(color(blue)("= 0.82 g L"^(-1))) = color(darkgreen)(ul(color(black)("9 L solution")))#
The answer is rounded to one significant figure, the number of sig figs you have for the mass of the solute.