1. Identify the Chemical Formula:
Tetramethylammonium iodide has the formula (CH₃)₄NI.
2. Determine the Molar Mass of Each Element:
* Carbon (C): 12.01 g/mol
* Hydrogen (H): 1.01 g/mol
* Nitrogen (N): 14.01 g/mol
* Iodine (I): 126.90 g/mol
3. Calculate the Total Molar Mass:
* Carbon: 4 C atoms * 12.01 g/mol/C = 48.04 g/mol
* Hydrogen: 12 H atoms * 1.01 g/mol/H = 12.12 g/mol
* Nitrogen: 1 N atom * 14.01 g/mol/N = 14.01 g/mol
* Iodine: 1 I atom * 126.90 g/mol/I = 126.90 g/mol
4. Add the Molar Masses of All Elements:
48.04 g/mol + 12.12 g/mol + 14.01 g/mol + 126.90 g/mol = 201.07 g/mol
Therefore, the molar mass of tetramethylammonium iodide is 201.07 g/mol.
