Answer:
3900 mol Pb
General Formulas and Concepts:
Chemistry - Atomic Structure
- Reading a Periodic Table
- Using Dimensional Analysis
Explanation:
Step 1: Define
8.1 × 10⁵ g Pb
Step 2: Identify Conversions
Molar Mass of Pb - 207.2 g/mol
Step 3: Convert
[tex]8.1 \cdot 10^5 \ g \ Pb(\frac{1 \ mol \ Pb}{207.2 \ g \ Pb} )[/tex] = 3909.27 mol Pb
Step 4: Check
We are given 2 sig figs. Follow sig fig rules and round.
3909.27 mol Pb ≈ 3900 mol Pb
