Pentane, C₅H₁₂, Boils at 35°C

question 99

Multiple Choice

Pentane, C₅H₁₂, boils at 35°C. Which of the following is true about kinetic energy, E_k, and potential energy, E_p, when liquid pentane at 35°C is compared with pentane vapor at 35°C?

• A) E_k(g) < E_k(l); E_p(g)  E_p(l)
• B) E_k(g) > E_k(l); E_p(g)  E_p(l)
• C) E_p(g) < E_p(l); E_k(g)  E_k(l)
• D) E_p(g) > E_p(l); E_k(g)  E_k(l)
• E) E_p(g)  E_p(l); E_k(g)  E_k(l)

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Definitions:

Cognitive Restructuring

A set of cognitive therapy techniques for changing a person’s maladaptive beliefs or interpretations through persuasion and confrontation.

Systematic Desensitization

A behavioral therapy technique designed to reduce phobic responses and anxiety through gradual exposure to the feared object or situation paired with relaxation exercises.

Muscular Relaxation

The process of relieving tension in the muscles, leading to a state of physical comfort and reduced stress.

Free Association

Method used in psychoanalytic therapy in which the patient is to say anything that comes to her mind, no matter how apparently trivial, unrelated, or embarrassing.