1. Find the atomic masses of each element:

* Sulfur (S): 32.06 g/mol

* Oxygen (O): 16.00 g/mol

2. Multiply the atomic mass of each element by the number of atoms in the formula:

* Sulfur: 32.06 g/mol * 1 = 32.06 g/mol

* Oxygen: 16.00 g/mol * 2 = 32.00 g/mol

3. Add the masses together to find the molar mass of SO2:

* 32.06 g/mol + 32.00 g/mol = 64.06 g/mol

Therefore, one mole of sulfur dioxide (SO2) has a mass of 64.06 grams.