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:

Negative Emotion

An affective state characterized by feelings of sadness, anger, or fear.

Piagetian

Pertaining to the theories of cognitive development proposed by Jean Piaget, emphasizing stages of children's intellectual growth and how they understand the world.

Behaviorist

A psychologist or scientist who studies and applies behaviorism, a theory that all behaviors are learned through interaction with the environment.

Stress Hormones

Chemicals released in the body during stress, such as cortisol and adrenaline, which prepare the body for a fight-or-flight response.