All the Following Compounds Become Less Stable with Respect to Their

question 191

Multiple Choice

All the following compounds become less stable with respect to their elements as the temperature is raised except

• A) PCl₅(g).
• B) C₆H₁₂(l).
• C) N₂H₄(l).
• D) CuO(s).
• E) HCN(g).

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Definitions:

Enkephalins

Are pentapeptides involved in regulating nociception in the body; they function as neurotransmitters or neuromodulators.

Dynorphins

A class of opioid peptides produced in many parts of the brain, known for their role in modulating pain, emotion, stress, and addiction.

Interleukin-2

A type of cytokine signaling molecule in the immune system, essential for the growth, proliferation, and differentiation of T cells.

Prolactin

A hormone produced by the anterior pituitary gland that stimulates milk production in mammals after childbirth.