The molar mass of beryllium chloride (BeCl2) can be calculated by adding the molar masses of its constituent elements: beryllium (Be) and chlorine (Cl).
Beryllium has an atomic mass of approximately 9.01 g/mol. Chlorine has an atomic mass of about 35.45 g/mol. Since there are two chlorine atoms in beryllium chloride, we need to take that into account in our calculation:
- Molar mass of Be = 9.01 g/mol
- Molar mass of Cl = 35.45 g/mol (for one Cl atom)
- Molar mass of Cl2 = 2 × 35.45 g/mol = 70.90 g/mol
Now, adding these values together:
Molar mass of BeCl2 = 9.01 g/mol + 70.90 g/mol = 79.91 g/mol
Therefore, the molar mass of beryllium chloride is approximately 79.91 g/mol.