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Question

How many moles of hydrogen atoms are present in 1 mole of H2O?


A

2

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B

1

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C

4

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D

3

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Solution

The correct option is A

2


1 molecule of water contains 2 atoms of Hydrogen and 1 atom of Oxygen, therefore, every mole contains Avogadro's number of Oxygen particles and 2 times Avogadro's number of hydrogen atoms.


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