You can find the molar mass of carbon dioxide by adding together the molar masses of its component atoms.
The CO2 formula means that carbon dioxide has one carbon atom (12 g/mol) and two oxygen atoms (16 g/mol each).
Summing these masses as 12 + 2(16) gives 44 g/mol, meaning that there are 44 grams of CO2 in one mole of carbon dioxide.
Or in other words, one mole of carbon dioxide has a mass of 44 grams.
Look at the periodic table. The atomic mass, listed at the bottom of each element’s box, is “equivalent” numerically, to the molar mass. However, do pay attention to the difference in units.
The formula of carbon dioxide=CO2
If C=12 and 0=16 then 02 will be= 16×2
Therefore the ans.will be=12+16×2=44g