1. Find the molar mass of sulfur dioxide (SO2):
* Sulfur (S): 32.06 g/mol
* Oxygen (O): 16.00 g/mol (x2 for two oxygen atoms)
* Total: 32.06 + (16.00 x 2) = 64.06 g/mol
2. Find the mass of sulfur in sulfur dioxide:
* Sulfur (S): 32.06 g/mol
3. Calculate the percentage of sulfur:
* (Mass of sulfur / Molar mass of SO2) x 100%
* (32.06 g/mol / 64.06 g/mol) x 100%
* = 50%
Therefore, sulfur dioxide (SO2) is 50% sulfur by mass.
