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NEET2020ChemistrySome Basic Concepts of ChemistryActual

One mole of carbon atom weighs 12 g , the number of atoms in it is equal to, (Mass of carbon - 12 is 1 . 9926 × 10 - 23 g

Options

  1. A1 . 2 × 10 23
  2. B6 . 022 × 10 22
  3. C12 × 10 22
  4. D6 . 022 × 10 23

Correct answer

D. 6 . 022 × 10 23

Step-by-step solution

1 mole of carbon atom (=12 ~g ) 1 mole of a carbon atoms (=6.022 10²³ ) atoms Hence, mass of (6.022 10²³ ) atoms of carbon (=12 ~g ) Mass of 1 atom of carbon (= 12 6.022 10²³ =1.9 10⁻²³ ~g )

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