The molar mass of Mg(OH)₂ (Magnesium Hydroxide) is calculated by adding the atomic masses of its constituent elements. Here’s how it’s done:
- Magnesium (Mg) has an atomic mass of approximately 24.305 g/mol.
- Oxygen (O) has an atomic mass of approximately 16.00 g/mol.
- Hydrogen (H) has an atomic mass of approximately 1.008 g/mol.
Since there are two hydroxide (OH) groups in Mg(OH)₂, we need to account for two oxygen atoms and two hydrogen atoms. The calculation is as follows:
Molar Mass of Mg(OH)₂ = (1 × 24.305) + (2 × 16.00) + (2 × 1.008)
Molar Mass of Mg(OH)₂ = 24.305 + 32.00 + 2.016
Molar Mass of Mg(OH)₂ = 58.321 g/mol
Therefore, the molar mass of Magnesium Hydroxide (Mg(OH)₂) is approximately 58.321 g/mol.