ANSWER
The number of moles of KMnO4 is 0.0350 moles
EXPLANATION
Given that:
The mass of KMnO4 is 5.53 g
To find the number of moles of KMnO4, follow the steps below
Step 1: Write the formular for calculating the number of moles
[tex]\text{ Mole }=\text{ }\frac{\text{ mass}}{\text{ molar mass}}[/tex]Step 2: Find the molar mass of KMnO4
Recall, that the molar mass of KMnO4 is 158.034 g/mol
Step 3: Substitute the given data into the formula in step 1
[tex]\begin{gathered} \text{ Mole }=\text{ }\frac{5.53}{158.034} \\ \text{ Mole }=\text{ 0.0350 moles} \end{gathered}[/tex]Therefore, the number of moles of KMnO4 is 0.0350 moles