# ConcentrationAnswers - Concentration Questions Answers How...

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Concentration Questions ! How many grams of glucose would be dissolved to make 1 liter of a 0.5M glucose solution? 0.5 mole/liter x 180 grams/mole x 1 liter = 90 g ! How many molecules of glucose are in that 1 liter of 0.5M glucose solution? 0.5 mole/liter x 1 liter x 6.023x10 23 molecules/mole = 3.012x10 23 molecules ! What is the concentration of the 0.5M glucose solution expressed in mM? 0.5 mole/liter x 1000 mmoles/mole = 500 mM ! What is the concentration of the 0.5M glucose solution expressed in %? 0.5 mole/liter x 180 grams/mole x 1 liter/1000ml = 0.09 g/ml = 9 g/100ml = 9% ! How many grams of sucrose would be dissolved in 1 liter of a 0.5M sucrose solution? How does that compare to the grams of solute in the 0.5M glucose solution? 0.5 mole/liter x 342 grams/mole x 1 liter = 171 g = almost twice as many grams ! How many molecules of sucrose in that 1 liter of 0.5M sucrose solution? How does that compare to the amount of solute in the 0.5M glucose solution? 0.5 mole/liter x 1 liter x 6.023x10

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