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Carbon monoxide (CO) _____.

A. is a compound made of oxygen and carbon
B. is an element
C. increases in volume when compressed
D. is made of two oxygen atoms and two carbon atoms

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User Bertram
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4 votes
A i hope this helps :)
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User Umesh Chauhan
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3 votes
a. It is a compound made of oxygen and carbon
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User Tom Hunter
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