gomezvictoriamarie
gomezvictoriamarie gomezvictoriamarie
  • 14-01-2021
  • Chemistry
contestada

Potassium permanganate (KMnO2) is used as an explosive agent. How
many moles are there if we have 105.66 grams of potassium
permanganate?

Respuesta :

quasarJose
quasarJose quasarJose
  • 14-01-2021

Answer:

0.67mole

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  = [tex]\frac{mass}{molar mass}[/tex]  

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

  Number of moles = [tex]\frac{105.66}{158}[/tex]   = 0.67mole

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