How many molecules are in 4.5 moles of CO2?

2.71 * 10^24 molecules

Explanation:

We are given;

Moles of CO₂ as 4.5 moles

We are required to determine the number of molecules

From the Avogadro's constant;

1 mole of a molecular compound contains 6.022 * 10^23 molecules

Therefore;

Molecules of CO₂ = Moles of CO₂ * Avogadro's constant

That is;

= 4.5 moles * 6.022 * 10^23 molecules/mole

= 2.71 * 10^24 molecules

Hence, 4.5 moles of CO₂ contains 2.71 * 10^24 molecules