Question

2.5gram of sugar is dissolved in 47.5gram of water. calculate its concentration as percent by mass

Answer 1

HEY mate here is your answer.
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the answer will be 0.05%
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hope it helps you

^_^

Answer 2

amount of sugar = 2.5 g
amount of water = 47.5 g
total amount = 47.5 + 2.5
= 50 g
percentage by mass of sugar = 2.5 /50 × 100
5 %
so the percentage by mass of water = 100-5
= 95 %