Question

Potassium permanganate (KMnO2) is used as an explosive agent. How

many moles are there if we have 105.66 grams of potassium
permanganate?

Answer 1

0.67mole

Step-by-step explanation:

Given parameters:

Mass of potassium permanganate = 105.66g

Unknown:

Number of moles = ?

Solution:

To find the number of moles of the given compound;

Number of moles =
`(mass)/(molar mass)`

Molar mass of KMnO₄ = 39 + 55 + 4(16) = 158g/mol

Number of moles =
`(105.66)/(158)` = 0.67mole