Question

5g of solute dissolved in 45g of water.what is the percentage by mass of solution

Answer 1

45÷5=9% i hope i help you

Answer 2

Answer : The percentage by mass of solution is, 10 %

Solution : Given,

Mass of solute = 5 g

Mass of water (solvent) = 45 g

First we have to calculate the mass of solution.

Mass of solution = Mass of solute + Mass of solvent = 5 + 45 = 50 g

conversion factor required for %(m/m) of solution means the mass of solute present in 100 grams of solution.

$\% (m/m)\text{ of solution}=\frac{\text{ Mass of solute}}{\text{ Mass of solution}}\times 100$

Now put all the given values in this conversion factor, we get the percentage by mass of solution.

$\% (m/m)\text{ of solution}=\frac{5g}{50g}\times 100=10\%$

Therefore, the percentage by mass of solution is, 10 %