# Science_Chemistry

posted by Samantha

A glucose (C6H12O6) solution is 2.5% glucose by mass. If the density of the
solution is 1.10 g/mL, what is the molarity of glucose/water solution?

1. bobpursley

assume 1000grams. Then glucose is 25grams, and water 975 grams.
volume+ 1000/1.1=909 ml

molarity= (25/molmassglucose)/.909

2. Samantha

How did you get the amount of water?

3. Samantha

volume+ 1000/1.1=909 ml? I don't get this...

I understand how you got the water

4. bobpursley

you have 1000 total grams, the density is 1.1g/ml, so volume= 1000/1.1 ml

5. Samantha

Oh... I get it now! Thank you very much. Your help is greatly appreciated.

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