1 mole = 6.02×1023 atoms and 1 mole = 6.02×1023, molecules. How can molecules and atoms be equal?
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Solution
Avagadro's number: 6.02×1023, either atoms or molecules, are in a mole. A mole is 6.02×1023 pieces of anything. In the case of a compound, it's that number of molecules. In the case of an element, it's that number of atoms.