Answer : The concentration of solution in percent by mass is 7.29 %
Explanation :
Percent by mass : It means that the mass of solute present in the mixture and multiply by 100.
Given:
Mass of KBr = 12.4 g
Mass of solution = 170 g
Now we have to calculate the concentration of solution in percent by mass.
[tex]\text{Concentration of solution in percent by mass}=\frac{\text{Mass of }KBr}{\text{Mass of mixture}}\times 100[/tex]
[tex]\text{Concentration of solution in percent by mass}=\frac{12.4g}{170g}\times 100=7.29\%[/tex]
Therefore, the concentration of solution in percent by mass is 7.29 %
