Oxygen is a(n):

A. compound.
B. element.
C. mixture.
D. ion.


Answer: C

Health Professions

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A patient with known arteriosclerosis was outside doing lawn work when he started experiencing chest pain. Upon your arrival, the patient states that he has been resting and took a prescribed nitroglycerin tablet 5 minutes ago. The patient states that the pain is subsiding. You suspect:

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