Answer :
Final answer:
The mass of sugar obtained by evaporating water from 1.5 kg of a 10.5% sugar solution is 157.5 grams. Hence the correct option is (a).
Explanation:
To calculate the mass of sugar obtained from the evaporation of water from a sugar solution, we must consider the percentage by mass of the sugar in the solution.
Given that we have a 10.5% sugar solution by mass, this means that in every 100 grams of solution, there are 10.5 grams of sugar.
So, if we have 1.5 kg (or 1500 grams) of solution:
Mass of sugar = percentage of sugar by mass × total mass of solution
Mass of sugar = 0.105 × 1500 grams
Mass of sugar = 157.5 grams
Hence, the correct answer is: a. 157.5 g.
