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The concentration of urea in a solution prepared by dissolving 15.9 g of urea, CO(NH 2 ) 2 , in 73.5 g of water is

The concentration of urea in a solution prepared by dissolving 15.9 g of urea, CO(NH2)2, in 73.5 g of water is Answer % by mass. image text in transcribed

A solution of water, H2O, and ethanol, C2H5OH, contains an ethanol concentration of 59.7% by mass. The mole fraction of ethanol in this solution is Write your answer with 3 significant figures, i.e. 0.123

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