0.669mole
The formula for calculating the number of moles is expressed as:
[tex]moles=\frac{Mass}{Molar\text{ mass}}[/tex]Given the following parameters
[tex]\begin{gathered} Mass\text{ of }KMnO_4=105.66grams \\ molar\text{ mass of }KMnO_4=158.034g\text{/mol} \end{gathered}[/tex]Substitute the given parameters into the formula
[tex]\begin{gathered} mole\text{ of KMnO}_4=\frac{105.66g}{158.034g\text{/mol}} \\ mole\text{ of KMnO}_4=0.669mole \end{gathered}[/tex]Hence the molar mass of KMnO4 that were there is 0.669mole
