To find the molar mass of MgSO4 (magnesium sulfate), we need to add up the molar masses of each element in the compound.

Molar mass of MgSO4:
Mg (Magnesium) = 24.305 g/mol
S (Sulfur) = 32.06 g/mol
O (Oxygen) = 16.00 g/mol (for each oxygen atom, there are 4 in MgSO4)

Molar mass of MgSO4 = 24.305 + 32.06 + (16.00 * 4) = 24.305 + 32.06 + 64.00 = 120.365 g/mol

Therefore, the molar mass of MgSO4 (magnesium sulfate) is 120.365 g/mol.