Molar mass of iron(III) sulfate (Fe2(SO4)3)

The molar mass of iron(III) sulfate (Fe2(SO4)3) is 399.858 g/mol.

ferric sulfate

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Iron × 2 55.845 = 111.69
Sulfur × 3 32.06 = 96.18
Oxygen × 12 15.999 = 191.988
Total399.858 g/mol

Percent composition by element

  • Iron 27.93%
  • Sulfur 24.05%
  • Oxygen 48.01%

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FAQ

What is the molar mass of Fe2(SO4)3?

The molar mass of iron(III) sulfate (Fe2(SO4)3) is 399.858 g/mol.

How do you calculate the molar mass of Fe2(SO4)3?

Multiply the atomic mass of each element by the number of its atoms in Fe2(SO4)3, then add the results: 2 × 55.845 (Fe) + 3 × 32.06 (S) + 12 × 15.999 (O) = 399.858 g/mol.

What percentage of Fe2(SO4)3 is Oxygen?

Oxygen makes up 48.01% of the mass of iron(III) sulfate (Fe2(SO4)3).