Molar mass of potassium nitrate (KNO3)

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

saltpeter

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Potassium × 1 39.098 = 39.098
Nitrogen × 1 14.007 = 14.007
Oxygen × 3 15.999 = 47.997
Total101.102 g/mol

Percent composition by element

  • Potassium 38.67%
  • Nitrogen 13.85%
  • Oxygen 47.47%

Try another formula

H2O NaCl CO2 C6H12O6 H2SO4 Ca(OH)2 CuSO4·5H2O C8H10N4O2

Could not read that formula

Related compounds

KNO2 Potassium nitrite KOH Potassium hydroxide AgNO3 Silver nitrate KClO3 Potassium chlorate NaNO3 Sodium nitrate KAl(SO4)2·12H2O Potassium alum

FAQ

What is the molar mass of KNO3?

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

How do you calculate the molar mass of KNO3?

Multiply the atomic mass of each element by the number of its atoms in KNO3, then add the results: 1 × 39.098 (K) + 1 × 14.007 (N) + 3 × 15.999 (O) = 101.102 g/mol.

What percentage of KNO3 is Oxygen?

Oxygen makes up 47.47% of the mass of potassium nitrate (KNO3).