Question

2.5 g of sugar is dissolved in 47.5 g of water. Calculate its concentration as per cent by ma:
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Answer 1

Amount of sugar=2.5g

Amount of water=47.5g

Total amount=47.5+2.5=50g

Percent by mass of sugar= 2.5÷50×100

=5℅

So the percent by mass of water =100-5=95℅

Percent of sugar=5℅and per. Of water=95℅