The number of molecules in 2 moles of carbon dioxide is

Explanation

Two moles contain 2 x 6.02 x 10^23, which is 1.204 x 10^24 molecules, and this is true for any substance since the mole counts particles rather than mass. The number 44 is the molar mass of carbon dioxide in grams per mole, not a count of molecules. Note that the same 2 moles contain three times as many atoms, because each molecule has three.