20% w/w solution of sugar in 180g of water what is required amount of sugar
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A solution contains 20g of sugar dissolved in 180g water calculate the concentration in tems of mass by mass percentage of solution.
Ans. Sugar dissolves = 20g
Water ( Mass ) = 180g
.°. Total Mass Of The Solution= 180g + 20g
= 200g
Therefore, mass by mass percentage of the solution = Mass of the solute / Total mass of the solution × 100
i.e, 20/200 × 100
=10% Ans.
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