Question

what is the concentration of sugar(c12h22o11) in mol/l if it's 20g are dissolved in enough water to make a final volume up to 2l ?​

Answer 1

Answer:

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