Answer: a compound is a chemically made or chemically bonded where as a mixture is just something added like a smoothie
There are no options so I'll just give my answer. Intermolecular hydrogen bonding is responsible for the high boiling point of water. The presence of hydrogen bonds can cause an anomaly in the normal succession of states of matter for certain mixtures of chemical compounds as temperature increases or decreases.
The answer is
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only carboxyl groups (=C=OO-</span>