# A solution is made containing 11.2g of sodium sulfate per 95.0g of water. What is the percent by mass of the solute?

Approx. 10%
$\text{Solution percentage by mass}$ $=$ $\text{Mass of solute"/"Mass of solution}$ xx100% $=$ (11.2*g)/(11.2*g+95.0*g)xx100% ~=10%