VSA : How many oxygen atoms are there in 1 mole of CO2?

Question

How many oxygen atoms are there in 1 mole of CO₂? [Ans. 12.044 × 10²³]

Answer

Step 1: Calculation of molar mass

Molar mass = 12 + 16 × 2 = 44

Step 2: Calculation of moles

Calculate the number of moles of oxygen atoms: In one mole of CO₂, there are two oxygen atoms. Therefore, the number of moles of oxygen atoms in 1 mole of CO₂ is:

Number of moles of O atoms = 2 moles CO₂

Step 2: Calculation number of atom

Number of oxygen atoms = Number of moles of O atoms × Avogadro’s number

= 2 × 6.022 × 10²³

= 12.044 × 10²³ atoms

Therefore, there are approximately 12.044 × 10²³ oxygen atoms in 1 mole of CO₂.