What is the molality of solution made by dissolving 100 g of bromothymol blue (C27H28Br2O5S) in 1L of ethanol on a winter's day at 10°C. The density of ethanol at this temperature is 0.7979kg/L?
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An ethanol-water solution is prepared by dissolving 10.00 mL of ethanol, ... EtOH in the solution expressed as a) volume % b) mass % c) mass/volume % d) mole ... Mass C2H5OH = 10.00 mL × density = 10.00 mL × 0.789 g/mL = 7.89 g C2H5OH. Moles C2H5OH = 7.89 g × Molar Mass C2H5OH = 7.89 g C2H5OH × 46.07 ...
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