Molar Mass of KMnO4

How to work out the molar mass of KMnO4

1. Count the atoms of each element in KMnO4: 1 K, 1 Mn and 4 O.
2. Multiply each count by the element's atomic weight: 1 × 39.098 = 39.098; 1 × 54.938 = 54.938; 4 × 15.999 = 63.996.
3. Add the results: 39.098 + 54.938 + 63.996 = 158.032 g/mol.

Frequently asked questions

What is the molar mass of KMnO4?

The molar mass of potassium permanganate (KMnO4) is 158.032 g/mol, so one mole of it weighs 158.032 grams.

How many moles are in 100 grams of KMnO4?

100 g ÷ 158.032 g/mol = 0.633 mol.

Which element makes up most of the mass of KMnO4?

O, at 40.50% of the mass.