Help please I will mark Brainliest for the correct answer!! IT'S DUE IN A COUPLE OF HOURS.

2.6 mol HCl

Explanation:

Step 1: Write the balanced equation

2 KMnO₄ + 8 HCl ⇒ 3 Cl₂ + 2 MnO₂ + 4 H₂O + 2 KCl

Step 2: Calculate the number of moles of hydrochloric acid needed to react with 0.64 moles of potassium permanganate.

According to the balanced equation, the molar ratio of KMnO₄ to HCl is 2:8.

0.64 mol KMnO₄ × 8 mol HCl/2 mol KMnO₄ = 2.6 mol HCl

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.