How much does 66g of carbon dioxide take up? number of molecules?

Let us find the amount of carbon dioxide n (CO2) = m (CO2) / M (CO2), where:
m (CO2) – mass of carbon dioxide,
М (СО2) = 44 g / mol is the molar mass of carbon dioxide.
n (CO2) = 66/44 = 1.5 mol.
Let’s find the volume of carbon dioxide under normal conditions: V (CO2) = Vm * n (CO2), where Vm = 22.4 l / mol is the molar volume,
V (CO2) = 1.5 * 22.4 = 33.6 liters.
The number of carbon dioxide molecules: N (CO2) = n (CO2) * Na, where Na = 6.02 * 10 ^ 23 – Avogadro’s number.
N (CO2) = 1.5 * 6.02 * 10 ^ 23 = 9.03 * 10 ^ 23 molecules.