what is the % of mass of 50.0g of solute in 45.0g of water?

Answer 1

percent by mass = (mass solute/100 g solution)*100 .
50.0 g/(95 g solution) *100 = ??

Answer 2

is it 50.0g X 18.02

Answer 3

What part of 50.0 g/(95 g solution)*100 did you not understand?

Answer 4

solute/solution

50gSolute/45gSolution * 100 =

Answer 5

Yes to the first part, solute/solution. No to the second part.
No, you don't have 45 g solution. You have 50 g solute and you have that in 45 g OF WATER. The total mass of the solution is 45 g water + 50 g solute = 95 grams total.
So solute/solution = 50/95.