A 10.00%-by-mass solution of ethanol, CH2OH in water has a density of 0.9831 g/mol at 15oC and 0.9804 g/mol at 25 oC. Calculate the molality of the ethanol water solution at these two temperatures. Does the molality differ at the two temperatures (that is, at 15 and 25oC)?Single choice.

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Q: 25 g

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.