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35 votes
What does the small number 2 show in this chemical formula H2O ?

User Leleogere
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2 Answers

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16 votes

Answer: two atoms of hydrogen in a molecule of water.

Step-by-step explanation:

User Mohammad Zeeshan
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The 2 represents that there are 2 hydrogen atoms in the chemical formula H2O.
User Thaddeus Albers
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