Question

10g of sugar is dissolved in 40 g of water what is the percentage of solute by mass

Answer 1

10 g of sugar to 40g of water the solution becomes 50 g.

Percentage of the sugar solute = Mass of solute / Mass of solution * 100
= 10 / 50 * 100
= 20 %

hope this helps  you....

Answer 2

Percent by mass = mass of solute/total mass of solution × 100 %

==10/50×100%
==20%

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