Molar mass

Molar Mass of Zinc Sulfate Heptahydrate

The molar mass of zinc sulfate heptahydrate (ZnSO4·7H2O) is 287.541 g/mol.

Zinc Sulfate Heptahydrate at a glance

PropertyValue
Molar mass287.541 g/mol
Molecular weight287.541 u
Chemical formulaZnSO4·7H2O
Monoisotopic mass285.954824 u
CAS number7446-20-0
PubChem CID62640

How to calculate the molar mass of zinc sulfate heptahydrate

1 × 65.38 + 1 × 32.06 + 11 × 15.999 + 14 × 1.008 = 287.541 g/mol

  1. Count the atoms in ZnSO4·7H2O: Zn 1, S 1, O 11, H 14.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 287.541 g/mol.

Elemental composition of zinc sulfate heptahydrate

ElementAtomsAtomic weightMass (g/mol)Mass %
Zn Zinc165.3865.3822.738%
S Sulfur132.0632.0611.15%
O Oxygen1115.999175.98961.205%
H Hydrogen141.00814.1124.9078%

Grams and moles of zinc sulfate heptahydrate

AmountEquals
1 g0.0034778 mol
10 g0.034778 mol
100 g0.34778 mol
0.1 mol28.754 g
1 mol287.54 g
1 g, in particles2.0944 × 10^21