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

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

50.0 g/(95 g solution) *100 = ??

is it 50.0g X 18.02

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

solute/solution

50gSolute/45gSolution * 100 =

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.

To find the percent mass of solute in a solution, you need to calculate the mass of the solute and then divide it by the total mass of the solution (solute + solvent), and multiply the result by 100.

In this case, the solute is 50.0g and the solvent is 45.0g of water.

The total mass of the solution is the sum of the solute and solvent masses:

Total mass of solution = mass of solute + mass of solvent
Total mass of solution = 50.0g + 45.0g
Total mass of solution = 95.0g

Now, divide the mass of the solute by the total mass of the solution and multiply by 100 to get the percent mass of solute:

Percent mass of solute = (mass of solute / total mass of solution) x 100
Percent mass of solute = (50.0g / 95.0g) x 100
Percent mass of solute ≈ 52.63%

Therefore, the percent mass of 50.0g of solute in 45.0g of water is approximately 52.63%.