How many oxygen atoms are in 3.14 mol of A1203?

5.67 × 10²⁴ atoms O

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

3.14 mol Al₂O₃

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

= 5.67272 × 10²⁴ atoms O

Step 4: Check

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

5.67272 × 10²⁴ atoms O ≈ 5.67 × 10²⁴ atoms O

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