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13. Calculate the mole fraction ( Xethanol)  of C2H5OH in a solution that contains 46 grams of ethanol, C2H5OH, and 64 grams of methanol, CH3OH. 

14. Calculate the molarity (M) of a solution made by dissolving 360 g of glucose (C6H12O6) in enough water to make 1.5 L of solution.

15.  Describe how you would prepare 500 mLs of a 6.0 M HNO3  solution from an 18 M HNO3  solution.  

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