What is the molar mass of MgCO3?

The molar mass of magnesium carbonate (MgCO₃) can be calculated by adding up the atomic masses of all the atoms in the formula.

First, we need to find the atomic masses of the individual elements:

• Magnesium (Mg): approximately 24.31 g/mol
• Carbon (C): approximately 12.01 g/mol
• Oxygen (O): approximately 16.00 g/mol

In the formula MgCO₃, there is one magnesium atom, one carbon atom, and three oxygen atoms. Therefore, we calculate the molar mass as follows:

• Molar mass of MgCO₃ = (1 × 24.31 g/mol) + (1 × 12.01 g/mol) + (3 × 16.00 g/mol)

Thus:

• = 24.31 g/mol + 12.01 g/mol + 48.00 g/mol
• = 84.32 g/mol

So, the molar mass of magnesium carbonate (MgCO₃) is 84.32 g/mol.