KI (Potassium Iodide)
1. Find the atomic masses:
- Potassium (K): 39.10 g/mol
- Iodine (I): 126.90 g/mol
2. Add the atomic masses:
- Molar mass of KI = 39.10 g/mol + 126.90 g/mol = 166.00 g/mol
Therefore, the molar mass of KI is 166.00 g/mol.
CaCl₂ (Calcium Chloride)
1. Find the atomic masses:
- Calcium (Ca): 40.08 g/mol
- Chlorine (Cl): 35.45 g/mol
2. Multiply the atomic mass of chlorine by 2 (since there are two chlorine atoms):
- 35.45 g/mol * 2 = 70.90 g/mol
3. Add the atomic masses:
- Molar mass of CaCl₂ = 40.08 g/mol + 70.90 g/mol = 110.98 g/mol
Therefore, the molar mass of CaCl₂ is 110.98 g/mol.
