Molar mass

Molar Mass of Hydroxyapatite

The molar mass of hydroxyapatite (Ca5(PO4)3(OH)) is 502.307 g/mol.

Hydroxyapatite at a glance

PropertyValue
Molar mass502.307 g/mol
Molecular weight502.307 u
Chemical formulaCa5(PO4)3(OH)
Monoisotopic mass501.675955 u
CAS number1306-06-5
PubChem CID14781

How to calculate the molar mass of hydroxyapatite

5 × 40.078 + 3 × 30.974 + 13 × 15.999 + 1 × 1.008 = 502.307 g/mol

  1. Count the atoms in Ca5(PO4)3(OH): Ca 5, P 3, O 13, H 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 502.307 g/mol.

Elemental composition of hydroxyapatite

ElementAtomsAtomic weightMass (g/mol)Mass %
Ca Calcium540.078200.3939.894%
P Phosphorus330.97492.92218.499%
O Oxygen1315.999207.98741.406%
H Hydrogen11.0081.0080.20067%

Grams and moles of hydroxyapatite

AmountEquals
1 g0.0019908 mol
10 g0.019908 mol
100 g0.19908 mol
0.1 mol50.231 g
1 mol502.31 g
1 g, in particles1.1989 × 10^21