Indicate Which One of the Following Reactions Result in a Positive

question 24

Multiple Choice

Indicate which one of the following reactions result in a positive S_sys.

• A) AgNO₃(aq) + NaCl(aq)  AgCl(s) + NaNO₃(aq)
• B) HCl(g) + H₂O( )  HCl(aq)
• C) H₂(g) + I₂(g)  2 Hl(g)
• D) C₂H₂O₂(g)  2 CO(g) + H₂(g)
• E) H₂O(g)  H₂O(l)

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Definitions:

Hypothalamus

A region of the brain that regulates vital bodily functions, including temperature, hunger, thirst, fatigue, sleep, and circadian rhythms.

Sleep State

A natural, reversible state of reduced responsiveness to external stimuli and relative inactivity, accompanied by complex physiological processes essential for health.

Brain-Wave Activity

The patterns of neuronal electrical oscillations in the brain, detectable with technologies like EEG, associated with different states of consciousness, sleep, and cognitive processes.

Neck Muscle Activity

The movements and contractions of muscles in the neck region, which support the head and are involved in movement, posture, and expressing emotions.