Answer:
5.46% is the percent by mass concentration of the solution.
Explanation:
Mass of LiBr= 8.2 g(Solute)
Mass of solution = 150 g (Solution)
Mass of solution = Mass of solute + Mass of solvent
Mass of solute < Mass of solvent (Always)
Mass of water = 150 g - 8.2 g = 141.8 g (solvent)
Mass percentage is given as:
[tex]\frac{\text{mass of solute}}{\text{mass of solution}}\times 100[/tex]
[tex]Mass\%=\frac{8.2 g}{150 g}\times 100=5.46\%[/tex]
5.46% is the percent by mass concentration of the solution.
