# What is the molar mass of #SO_3#?

##### 1 Answer

Jun 14, 2016

The molar mass of

#### Explanation:

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 **sulfur** and **oxygen** . Find the molar mass of S (32.07 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.

Since there is only 1 sulfur atom, the molar mass can be taken directly from the periodic table

Since there are 3 atoms of oxygen, we have to multiply its molar mass by 3 to obtain

Next we just add the final masses of each element together: