Answer:
2.499 mol HCl
General Formulas and Concepts:
Chemistry - Atomic Structure
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Explanation:
Step 1: Define
1.505 × 10²⁴ atoms HCl (Hydrochloric acid)
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[tex]1.505 \cdot 10^{24} \ atoms \ HCl(\frac{1 \ mol \ HCl}{6.022 \cdot 10^{23} \ atoms \ HCl} )[/tex] = 2.49917 mol HCl
Step 4: Check
We are given 4 sig figs. Follow sig fig rules and round.
2.49917 mol HCl ≈ 2.499 mol HCl
