Respuesta :

B. CO

A compound is a combination of 2 or more elements and since both of the letters are capitalized you know that they’re 2 separate elements, therefore a compound
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Answer:

B. CO

Explanation:

CO is a compound composed of multiple atoms of elements held together by some type of chemical bond. ... Carbon monoxide consists of carbon and oxygen. The formula is CO (C is carbon and O is oxygen). Each molecule consists of one carbon and one oxygen joined together. Ur welcome.

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