# What is the mass percent of sucrose in a solution obtained by mixing 225.0 g of an aqueous solution that is 6.25% sucrose by mass with 135.0 g of an aqueous solution that is 8.20% sucrose by mass?

"Mass %"="Mass of solute"/"Mass of solution"xx100%
(6.25%xx225.0*g+8.20%xx135.0*g)/(225.0*g+135.0*g)xx100%
~=7.0%