1. Identify the Elements and Their Atomic Weights:
* H (Hydrogen): 1.008 g/mol
* Au (Gold): 196.97 g/mol
* Cl (Chlorine): 35.45 g/mol
2. Count the Number of Atoms of Each Element:
* H: 1 atom
* Au: 1 atom
* Cl: 4 atoms
3. Calculate the Molecular Weight:
* (1 * 1.008 g/mol) + (1 * 196.97 g/mol) + (4 * 35.45 g/mol) = 339.34 g/mol
Therefore, the molecular weight of HAuCl₄ is 339.34 g/mol.
