Calculate the Molar Mass of Na2SO4

To calculate the molar mass of sodium sulfate (Na₂SO₄), we need to consider the atomic masses of each element in the compound and how many atoms of each are present.

The formula Na₂SO₄ consists of:

• 2 sodium (Na) atoms
• 1 sulfur (S) atom
• 4 oxygen (O) atoms

Using the following approximate atomic masses:

• Sodium (Na): 23 g/mol
• Sulfur (S): 32 g/mol
• Oxygen (O): 16 g/mol

We can calculate the molar mass of Na₂SO₄ as follows:

Molar mass of Na2SO4 = (2 × Atomic mass of Na) + (1 × Atomic mass of S) + (4 × Atomic mass of O)

Substituting the values:

Molar mass of Na2SO4 = (2 × 23 g/mol) + (1 × 32 g/mol) + (4 × 16 g/mol)
                 = 46 g/mol + 32 g/mol + 64 g/mol
                 = 142 g/mol

Thus, the molar mass of sodium sulfate (Na₂SO₄) is 142 g/mol.