HElp i dont know how to do this.

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HElp i dont know how to do this.

Post by 1koolguy » Thu Nov 23, 2006 6:47 pm

The molecular weight of the protein is about 45 kilodaltons, and the molecular wedight of glucose is about 180 daltons. How can you estimate the number of molecules of glucose in the 5% solution compared to the number of albumin molecules in hte 5% solution?

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Post by Vudulis » Fri Nov 24, 2006 9:03 am

firs of all, you need to know the volume of your solution, because 5% does not say anything about quantity. then just calculate in this direction:
mass (for example, approximately 5g in 100g water = 5% solution) -> n(mol) (you know the M already) -> N and you have got what you need.

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Post by canalon » Fri Nov 24, 2006 6:16 pm

5% when referring to a solution is usually Weight/volume, so in your case that would be 5g glucose or albumin/100ml of water.

You can the calculate your concentration in terms of moelcules per 100ml and compare the number of molecules.

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