Molar mass

Molar Mass of Potassium Bromide

The molar mass of potassium bromide (KBr) is 119.002 g/mol.

Potassium Bromide at a glance

PropertyValue
Molar mass119.002 g/mol
Molecular weight119.002 u
Chemical formulaKBr
Monoisotopic mass117.882044 u
CAS number7758-02-3
PubChem CID253877

How to calculate the molar mass of potassium bromide

1 × 39.098 + 1 × 79.904 = 119.002 g/mol

  1. Count the atoms in KBr: K 1, Br 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 119.002 g/mol.

Elemental composition of potassium bromide

ElementAtomsAtomic weightMass (g/mol)Mass %
K Potassium139.09839.09832.855%
Br Bromine179.90479.90467.145%

Grams and moles of potassium bromide

AmountEquals
1 g0.0084032 mol
10 g0.084032 mol
100 g0.84032 mol
0.1 mol11.9 g
1 mol119 g
1 g, in particles5.0605 × 10^21