1. Determine the Molecular Formula:
* Ammonium sulfide has the formula (NH₄)₂S.
2. Calculate the Molar Mass:
* Nitrogen (N): 2 atoms * 14.01 g/mol = 28.02 g/mol
* Hydrogen (H): 8 atoms * 1.01 g/mol = 8.08 g/mol
* Sulfur (S): 1 atom * 32.07 g/mol = 32.07 g/mol
* Total Molar Mass = 68.17 g/mol
3. Calculate the Percent Composition of Each Element:
* Nitrogen (N): (28.02 g/mol / 68.17 g/mol) * 100% = 41.11%
* Hydrogen (H): (8.08 g/mol / 68.17 g/mol) * 100% = 11.86%
* Sulfur (S): (32.07 g/mol / 68.17 g/mol) * 100% = 47.03%
Therefore, the percent composition of ammonium sulfide is:
* Nitrogen: 41.11%
* Hydrogen: 11.86%
* Sulfur: 47.03%
