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Question

How many atoms are there in 1 mole of H2O?

A
3
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B
54
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C
6.02×1023
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D
2(6.02×1023)
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E
3(6.02×1023)
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Solution

The correct option is E 3(6.02×1023)
1 mole of H2O contains 3 moles of atoms ( 2 moles of H atoms and 1 mole of O atoms).
1 mole of atoms corresponds to Avogadro's number of atoms which is 6.02×1023.
3 moles of atoms corresponds to 3(6.02×1023) atoms.

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