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Which of the following is true of a hydrogen bond?
Sleepwalking
A disorder that involves walking or performing other activities while not fully awake, typically occurring during deep sleep.
Hypnosis
A deep state of concentration and relaxation, characterized by intense focus, increased openness to suggestion, and often employed for healing reasons.
Painkillers
Drugs or medication used to relieve pain.
Allergic
Having an adverse reaction of the immune system to a substance that is harmless to most people.
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