CBSE Notes, Lectures

CBSE - Chemistry - Atoms and Molecules

Atoms and Molecules

NCERT In Text

If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?

One mole of carbon atoms weighs 12 g (Given)
i.e., mass of 1 mole of carbon atoms = 12 g
Then, mass of 6.022 × 1023 number of carbon atoms = 12 g
Therefore, mass of 1 atom of carbon = 12 ÷ (6.022 × 1023)
= 1.9926 x 10-23 g

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