# Question 9b6bc

Dec 12, 2014

The $\text{mass"/"mass}$ "%"# concentration of a solution is calculated by dividing the mass of solute by the mass of solution then multiplying times 100%.

$\text{mass"/"mass}$ $\text{%}$ = $\text{mass of solute"/"mass of solution}$ x $\text{100%}$

Given:
mass of solute (${\text{SrCl}}_{2}$) = 6.50 g
mass of solution = 250.0 g

Unknown:
% concentration

Solution:

$\text{mass"/"mass}$ % = $\text{6.50 g SrCl"_2"/"250.0}$ $\text{g}$ $\text{solution}$ x $\text{100%}$ = $\text{2.6%}$