Answer:
4.70 × 10²⁴ atoms Ge
General Formulas and Concepts:
Math
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Chemistry
Atomic Structure
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Explanation:
Step 1: Define
7.80 mol Ge
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[tex]\displaystyle 7.80 \ mol \ Ge(\frac{6.022 \cdot 10^{23} \ atoms \ Ge}{1 \ mol \ Ge} )[/tex] = 4.69716 × 10²⁴ atoms Ge
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
4.69716 × 10²⁴ atoms Ge ≈ 4.70 × 10²⁴ atoms Ge
