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20 April, 21:29

Which of the following is a compound?

a. H2O

b. He

c. O₂

d. Ca

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Answers (2)
  1. 21 April, 00:56
    0
    A. H20

    Explanation:

    H20 is a combination of 2 hydrogen atoms and 1 oxygen atom
  2. 21 April, 01:00
    0
    a. H2O
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