# how many atoms of carbon have the exact mass of 12.011g/mol, explain?

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- pisgahchemistLv 78 months ago
Carbon atoms .....

No carbon atom has a mass of 12.011 amu. 12.011 g/mol is the weighted average of the naturally occurring isotopes of carbon.

Clearly, if you had 12.011g of a natural assortment of carbon atoms, then you would have "exactly" one mole of carbon atoms, or 6.022x10^23 carbon atoms.

It is based on the "definition" of a mole:

1 mol C atoms = 6.022x10^23 C atoms

1 mol C atoms = 12.011 g C atoms

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- Bobby_ThinLv 78 months ago
Molar mass of naturally ocurring Carbon is 12.011 g/mol

so you have exactly 1 mole of C in your nass.

number of atoms in a mole of an element is avogadros number of atoms or

6.02 * 10 ^23 atoms

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