Percent concentration of Al2(SO4)3
1) Set the equation
[tex]\text{Percent by mass = }\frac{\text{mass of solute}}{\text{mass of solution}}\cdot100=[/tex]2) Replace known values.
[tex]\text{Percent concentration of Al}_2(SO_4)_3=\frac{18.0gofAl_2(SO_4)_3}{85.0gofH_2O}\cdot100\text{ =}21.2percentofAl_2(SO_4)_3[/tex]The percent concentration of Al2(SO4)3 is 21.2% Al2(SO4)3.