Calculate the Molality of C₂H₅OH in a Water Solution That

question 21

Multiple Choice

Calculate the molality of C₂H₅OH in a water solution that is prepared by mixing 50.0 mL of C₂H₅OH with 100.0 mL of H₂O at 20°C. The density of the C₂H₅OH is 0.789 g/mL at 20°C.

• A) 1.24 m
• B) 0.086 m
• C) 8.56 m
• D) 0.094 m
• E) none of these

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Definitions:

Test Statistic F

A ratio of variances used in the context of an F-test in statistics to compare the dispersions of two populations.

ANOVA Table

A structured display that sums up the sources of variability in a dataset, used primarily in analysis of variance to discern significant differences between means.

Sum of Squares

The total of the squared differences between data points and their mean, reflecting the total variation within a data set.

Error Sum of Squares

A measure of the discrepancy between the data and an estimation model, quantifying the amount of variation in the data that is not explained by the model.