Question

How Much Water Should Be Added To 30G Of Sugar To Obtain 7.5% Sugar Solution?

Answer 1

Answer:

400 g

Explanation:

7.5% sugar solution(by mass)=7.5g sugar in 100g water

amount of sugar(in g)                             corresponding amount of water(in g)

7.5                                                                100

1                                                                    100/7.5

30                                                                (100x30)/7.5 ------(by unitary method)

                                                                 =400

Answer 2

Answer:370 g

Explanation:mass of solute = 30 g

Mass of solvent = x

Mass of solution = 30 + x

Concentration = 7.5%

Mass of solute ÷ mass of solution × 100

30/30+ x × 100 = 7.5%

30 × 100 = 7.5(30+x)

3000= 225 + 7.5 x

3000- 225 = 7.5x

2775= 7.5x

X= 2775/ 7.5

X= 370 g