Question

what is the mass percentage of sugar in a solution containing 200 g of sugar and 100 g

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Answer 1

Step-by-step explanation:

Answers

IlaMends Virtuoso

Answer:The concentration by mass of final solution is 45% .

Solution

In case of Pehal, 20% of sugar solution in which she added 20 g of sugar more.

Mass of sugar before addition to the solution = 20 g

Mass of sugar after addition to the solution = 20 +20 = 40 g

Mass of water in solution= 80 g

M_1= Total mass of solution= 80 g + 40 g = 120 g

In case of Ishaan, 50% of sugar solution from which he evaporated 20 g of water.

Mass of sugar in solution = 50 g

Mass of water before evaporation= 50 g

Mass of water after evaporation = 50 g - 20 g = 30 g

M_2 = Total mass of solution=50 g + 30 g = 80 g

After mixing both the solution

Total mass of sugar after the mixing of solutions,(M) = 40 g + 50 g = 90 g

Total mass of the final solution= M_1+M_2=120 g + 80 g = 200 g

Mass percentage of sugar in final solution=\frac{M}{M_1+M_2}\times 100=\frac{90}{200}\times 100=45\%

The concentration by mass of final solution is 45%