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Avogadro's Number

How many atom...

Question

How many atoms are there in exactly 12 g of Carbon ?

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Solution

1 mole of any substance = 6.022 x 10²³ atoms.
Also, 1 mole of any substance = molecular weight expressed in gms
Molecular wt of C = 12g.
Thus 12 g of C = 1 mole of C = 6.022 x 10²³

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