posted by Anonymous .
In 24 g of a 7.8% by mass solution of CaSO4? How many grams of solute are present gCaSO4? how many grams of solvent are present g solvent?
7.8% CaSO4 by mass means
7.8 g CaSO4/100 g solution.
So in 24 g of the solution, there must be
7.8 x (24/100) = ?? g CaSO4
24.0 g solution - g CaSO4 = grams solvent.