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Carbon monoxide (CO) _____.

is an element
is made of two oxygen atoms and two carbon atoms
increases in volume when compressed
is a compound made of oxygen and carbon

User Saturn
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2 Answers

14 votes

Answer:

is a compound made of oxygen and carbon

Step-by-step explanation:

User Joey Ezekiel
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4 votes

Answer:

the last one

Step-by-step explanation:

All of the other ones are false

User Ryanmarc
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