Molar mass and moles. Find the atomic mass for each element by using the mass given in the Periodic Table. Atomic And Molecular Masses Molecular Mass Chemistry Education Molecular 14 Si Silicon 28085. . How can I find the molar mass of an element. For carbon dioxide CO 2 the relative atomic mass is 12011 amu for carbon and 15999 for oxygen. For example oxygen has a relative atomic mass of 159994 amu. Browse the list of common chemical. Therefore the units of molar mass are gramsmoleHow to find the molar mass of a compound. This volume is called the molar volume of a gas. We can also use molecular weight calculator for finding molar mass of a. Carbon molecular weight. Atomic mass of Oxygen 1600. G mol-1 g mol. Relative atomic and molecular mass values as defined are dimensionless. 13 Al Aluminium 269815385. Molar volume of gases One mole of any gas has a volume of 24 dm 3 o...