Molar mass

Molar Mass of Potassium Nitrate

The molar mass of potassium nitrate (KNO3) is 101.102 g/mol.

Potassium Nitrate at a glance

PropertyValue
Molar mass101.102 g/mol
Molecular weight101.102 u
Chemical formulaKNO3
Monoisotopic mass100.951524 u
CAS number7757-79-1
PubChem CID24434

How to calculate the molar mass of potassium nitrate

1 × 39.098 + 1 × 14.007 + 3 × 15.999 = 101.102 g/mol

  1. Count the atoms in KNO3: K 1, N 1, O 3.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 101.102 g/mol.

Elemental composition of potassium nitrate

ElementAtomsAtomic weightMass (g/mol)Mass %
K Potassium139.09839.09838.672%
N Nitrogen114.00714.00713.854%
O Oxygen315.99947.99747.474%

Grams and moles of potassium nitrate

AmountEquals
1 g0.009891 mol
10 g0.09891 mol
100 g0.9891 mol
0.1 mol10.11 g
1 mol101.1 g
1 g, in particles5.9565 × 10^21