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If 18gram of glucose is dissolved in 100 gram of water. The

## If 18gram of glucose is dissolved in 100 gram of water. The

[From: Chemistry] [author: ] [Date: 01-07] [Hit: ]
If 18gram of glucose is dissolved in 100 gram of water. The concentration of the resulting solution is?......

If 18gram of glucose is dissolved in 100 gram of water. The concentration of the resulting solution is?

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david say: you can calculate molality, not molarity, based on given info. --- you can also do % by mass or even mass/volume
.. molality = moles solute / kg solvent
= (18/180) / (100/1000)
= .1 / .1 = 1m
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billrussell42 say: depends on how you want to measure it.

18g/100g or 18% by mass is one method.
correction: 18/118 or 15% by mass

IF you wanted molar concentration:
Glucose has a molecular weight of 180.16 g/mol
18g is 18/180.16 or about 0.1 mol
100g of water is 100 mL in volume or 0.1 L
so the molar concentration is 0.1 mol / 0.1 L = 1 mol/L
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John say: 18 g / 118g
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