Determine the number of moles in 5.25x1024 formula units if lead (IV) oxide.

8.72 mol PbO₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

5.25 × 10²⁴ formula units PbO₂

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

= 8.71803 mol PbO₂

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

8.71803 mol PbO₂ ≈ 8.72 mol PbO₂