Question

what is the concentration of sugar in mole per litre if its 20g is dissolved in enough water to make a final volume upto 2litre?​

Answer 1

To the nearest .1, the molecular weights of each element are:

C: 12

H: 1

O: 16

So the molecular weight of the sugar is 12 x 12 + 22 x 1 + 11 x 16 = 342. So 20 grams is 20 / 342 = .058 moles. If the solution contains 2 liters, then the concentration is .058 / 2 = .029 mol / L

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Answer 2

Answer:

20 grams is 20 / 342 = .058 moles

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