Question

The molar mass of carbon dioxide (CO2) is 44.0 grams/mol. How many molecules are in 526 grams of carbon dioxide?


a
3.16 x 1024 molecules of carbon dioxide

b
3.17 x 1026 molecules of carbon dioxide

c
7.20 x 1024 molecules of carbon dioxide

d
5.04 x 1022 molecules of carbon dioxide

Answer 1

To find the number of molecules in 526 grams of carbon dioxide, we need to first convert the mass of CO2 to moles using the molar mass of 44.0 g/mol.

526 grams * (1 mol/44.0 grams) = 11.95 moles

Next, we use Avogadro's number to convert moles to molecules:

1 mole = 6.022 x 10^23 molecules

Therefore, 11.95 moles * (6.022 x 10^23 molecules/mol) = 7.20 x 10^24 molecules

Therefore, the answer is c) 7.20 x 10^24 molecules of carbon dioxide.