Multiple choice

If a solution is prepared by dissolving 20 g of sugar in water and the volume of the water taken is 200 ml, then the concentration in terms of mass by mass percentage of the solution is ___________.

  1. 5.29%

  2. 9.09%

  3. 11.25%

  4. 10%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mass of solute = 20g. Mass of solvent (water) = 200g (assuming density 1g/ml). Total mass of solution = 220g. Concentration = (20 / 220) * 100 = 9.09%.

AI explanation

Assuming the density of water is 1 g/ml, the 200 ml of water used has a mass of 200 g. The total mass of the solution is the mass of the sugar plus the mass of the water, which is 20 g + 200 g = 220 g. The mass by mass percentage is (20 / 220) * 100, which equals 9.09%.

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