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4 votes
Which of the following is a compound?
a. H2O
b. He
c. O₂
d. Ca

User Marinbgd
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2 Answers

6 votes

Answer:

A. H20

Step-by-step explanation:

H20 is a combination of 2 hydrogen atoms and 1 oxygen atom

User Hanchen Jiang
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5 votes

Answer:

a. H2O

Step-by-step explanation:

User Ganesh Pandhere
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