Question

Calculate the number of atoms of oxygen and
carbon in 5 moles of CO2​

Answer 1

1 molecule of CO2= 1C atom +2O

1mole of CO2=6.02×10*23CO2 molecule

So,

1mole of CO2 contains(2×6.02×10*23)

So ,

3 mole of CO2 contains(3×2×5.02×10*23)

O atoms=3.61×10*24 O atoms

Answer 2

• $\sf{3.011\:×\:10^{24}}$

Explanation:

• 1 mole of $\sf{CO_{2}}$ contains 2 moles of oxygen
• 5 moles of $\sf{CO_{2}}$ contain 10 moles of oxygen

❶ Formula,

• Number of atoms of oxygen = Number of moles of oxygen × Avogadro's number

Applying values,

⟼ $\sf{10\:×\:(6.023\:×\:10^{23})}$

⟼ $\sf{6.023\:×\:10^{24}}$ atoms of oxygen

• 1 mole of $\sf{CO_{2}}$ contains 1 mole of carbon
• 5 moles of $\sf{CO_{2}}$ contains 5 moles of carbon.

❷ Formula,

• No. of. atoms of carbon = No. of. moles of carbon × Avogadro's number

Applying values,

⟼ $\sf{5\:×\:(6.023\:×\:10^{23})}$

⟼ $\sf{3\:×\:10^{24}}$ atoms of carbon

• Hence, The no. of. atoms of carbon = $\sf{3\:×\:10^{24}}$