Calculate the gram molecular weight of carbon dioxide if atomic weight of carbon and oxygen are 12 amu and 16 amu respectively.

g. atomic weight of C=12amu×1.66×10−24g1amug. at. wt. of oxygen                    =16amu×1.66×10−24g1amu×6.023×1023=16g∴  g. mol. wt. of CO2=g. at. wt. of C+2 x g. at. wt. of O=12g+(2x16)g=44 g mol-