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5. Which substance represents a compound?

(1) C(s)
(2) Co(s)
(3) CO(g)
(4) O₂(g)

2 Answers

1 vote
Number 3, CO(g) because a compound is a substance that has 2 or more elements
User Shalu T D
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2 votes
The substance that represents a compound is CO
User Adam Lane
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