A Solution of Ethanol (C₂H₆O) in Water Is Sometimes Used

question 20

Multiple Choice

A solution of ethanol (C₂H₆O) in water is sometimes used as a disinfectant. 1.00 L of this solution contains 553 g of ethanol and 335 g of water. What is the molality of the ethanol in this solution?

• A)0.392 m
• B)0.608 m
• C)13.5 m
• D)33.6 m
• E)35.8 m

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Definitions:

Total Probability Rule

A fundamental rule in probability theory that allows for the calculation of the total probability of an outcome by considering all possible ways that outcome can occur.

Law of Large Numbers

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Joint Frequency Distribution

A statistical representation showing the frequency of occurrences for combinations of two or more categories or variables.