What Is the Molality of a Solution Prepared by Dissolving

question 104

Multiple Choice

What is the molality of a solution prepared by dissolving 86.9 g of diethyl ether, C₄H₁₀O, in 425 g of benzene, C₆H₆?

• A) 0.362 m
• B) 0.498 m
• C) 2.01 m
• D) 2.76 m
• E) none of the above

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Definitions:

Partial Reinforcement

A technique in behavioral psychology where a behavior is reinforced only some of the time, leading to more resistant behavior to extinction.

Lever Pressing

A behavior often studied in operant conditioning experiments where an animal manipulates a lever to receive a reward or avoid a punishment.

Learned Frustration Response

A behavioral response developed over time in reaction to repeated frustrating situations or obstacles.

Learned Helplessness

A condition in which an individual learns to believe they are powerless to change a negative situation because previous attempts have been unsuccessful, leading to a lack of motivation or effort.