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Posted by on Monday, October 20, 2008 at 3:30pm.

the density at 20 degrees celcius of a .258m solution of glucose in water is 1.0173 g/ml, and the molar mass of glucose is 180.2 g/mol. What is the MOLARITY of the solution?

  • chemistry - , Monday, October 20, 2008 at 3:34pm

    Molarity=molessolute/literssolution.


    Assume 1 liter.

    1 kg of solvent.
    moles solute=.258
    Mass of soluttion=1kg+.258*molmassglucose
    volume of solution=masssolutioin/density.

  • chemistry - , Monday, October 20, 2008 at 3:34pm

    Please never post your real name.

  • chemistry - , Monday, October 20, 2008 at 3:54pm

    can you explain a little more, im really lost

  • chemistry - , Monday, October 20, 2008 at 4:12pm

    you know moles of solute per 1kg solvent, that was given. Then, you need to find the volume of the solution with 1kg solvent. You do that by adding the mass of the solute, then dividing the mass by the density. That gives you the volume of solution.
    YOu can now calculate molarity.

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