What is the molar mass of #Fe_2O_3#?
The molar mass of
To find the molar mass of a compound you would use the periodic table to find the molar mass of each element separately.
In our case, our two elements are iron and oxygen . Find the molar mass of Fe (55.85 g/mol) and O (16.00 g/mol). Next multiply the molar mass of each element by the number of atoms given in the chemical formula.
For example, there are 2 atoms of Fe (denoted by the subscript). So multiply its molar mass by 2 to obtain
We do the same for oxygen. There are 3 atoms of oxygen, so we multiply its molar mass by 3 to obtain
Next we just add the final masses of each element together: