Question

Calculate the number of oxygen atoms in 3 moles

Answer 1

Answer:

1.8 x 10^24 atoms

Explanation:

because, 1 mole of Oxygen contains 6.022 x 10^23 atoms.

For 3 moles, it will be 3 x 6.022 x 10^23

which is equal to 1.8 x 10^24 atoms.

Answer 2

Answer:

There are  $18.066$ × $10^{23}$  Oxygen atoms in 3 moles.

Explanation:

• Mole is a unit of measurement for the quantity of a chemical substance.
• One mole is defined as "the quantity of substance in a system that comprises as many entities as there are atoms in 12 grams of carbon - 12".
• In other terms, a mole is defined as $6.022$ × $10^{23}$ atoms, molecules, ions, or other chemical entities.
• To calculate the total number of atoms/molecules in a sample, multiply the number of moles by the Avogadro constant.

Number of Atoms or Molecules = (Number of Moles) ×  $6.022$ × $10^{23}$

Therefore, the number of oxygen atoms in 3 moles is:-

⇒ Number of Oxygen atoms = 3 ×  $6.022$ × $10^{23}$

⇒ Number of Oxygen atoms = $18.066$ × $10^{23}$  atoms.

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