Chemistry, asked by mohitsinghsaini2458, 1 year ago

34.2 g of glucose is dissolved in 400 g of water. Calculate percentage by mass of glucose solution. (7.87 w/w)

Answers

Answered by JunaidMirza
6

Answer:

7.87% w/w

Explanation:

Mass% = (Mass of solute / Mass of solution) × 100

= [34.2 g / (400 g + 34.2 g)] × 100

≈ 7.87

Answered by abhi178
4

34.2 g of glucose is dissolved in 400 g of water. Calculate percentage by mass of glucose solution...

solution : mass of glucose (solute) = 34.2g

mass of water (solvent) = 400g

so, mass of solution = mass of solute + mass of solvent

= mass of glucose + mass of water

= 34.2g + 400g

= 434.2g

now,

% by mass of glucose solution = mass of solute/mass of solution × 100

= 34.2/434.2g × 100

= 3420/434.2 %

= 7.876554 ≈ 7.87 % (w/W)

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