Molar mass

Molar Mass of Hydrofluoric Acid

The molar mass of hydrofluoric acid (HF) is 20.006 g/mol.

Hydrofluoric Acid at a glance

PropertyValue
Molar mass20.006 g/mol
Molecular weight20.006 u
Chemical formulaHF
Monoisotopic mass20.0062282 u
CAS number7664-39-3
PubChem CID14917

How to calculate the molar mass of hydrofluoric acid

1 × 1.008 + 1 × 18.998 = 20.006 g/mol

  1. Count the atoms in HF: H 1, F 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 20.006 g/mol.

Elemental composition of hydrofluoric acid

ElementAtomsAtomic weightMass (g/mol)Mass %
H Hydrogen11.0081.0085.0385%
F Fluorine118.99818.99894.962%

Grams and moles of hydrofluoric acid

AmountEquals
1 g0.049985 mol
10 g0.49985 mol
100 g4.9985 mol
0.1 mol2.0006 g
1 mol20.006 g
1 g, in particles3.0102 × 10^22