1. Find the atomic masses of the elements:

* Beryllium (Be): 9.012 g/mol

* Chlorine (Cl): 35.453 g/mol

2. Multiply the atomic mass of each element by its subscript in the formula:

* Be: 9.012 g/mol * 1 = 9.012 g/mol

* Cl: 35.453 g/mol * 2 = 70.906 g/mol

3. Add the results from step 2 to get the molar mass of BeCl₂:

9.012 g/mol + 70.906 g/mol = 79.918 g/mol

Therefore, the molar mass of beryllium chloride (BeCl₂) is 79.918 g/mol.