The molar mass of calcium sulfate (CaSO4) is calculated by adding the atomic masses of its constituent elements. Here’s how it’s done:
- Calcium (Ca) has an atomic mass of approximately 40.08 g/mol.
- Sulfur (S) has an atomic mass of approximately 32.07 g/mol.
- Oxygen (O) has an atomic mass of approximately 16.00 g/mol. Since there are four oxygen atoms in calcium sulfate, the total mass for oxygen is 4 × 16.00 = 64.00 g/mol.
Adding these together:
40.08 (Ca) + 32.07 (S) + 64.00 (O) = 136.15 g/mol
Therefore, the molar mass of calcium sulfate is 136.15 g/mol.