Question

Calculate the number of CO2 molecules ( NCO2) in 0.0693 mol of CO2

Answer 1

0.42×10²³ molecules of CO₂.

Step-by-step explanation:

Given data:

Number of moles of CO₂ = 0.0693 mol

Number of molecules of CO₂ = ?

Solution:

The given problem can be solve by using the Avogadro number.

Avogadro number is the number of atoms , ions and molecules in one gram atom of element, one gram molecule of compound and one gram ion of substance.

The number 6.022×1023 is called Avogadro number.

1 mole of CO₂ contain 6.02 ×10²³ molecules of CO₂

0.0693 moles of CO₂ contain = 0.42×10²³ molecules of CO₂

0.0693× 6.02 ×10²³ = 0.42×10²³