Answer:
126 g Fe
General Formulas and Concepts:
Math
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Chemistry
Atomic Structure
- Reading a Periodic Table
- Using Dimensional Analysis
Explanation:
Step 1: Define
2.25 mol Fe
Step 2: Identify Conversions
Molar Mass of Fe - 55.85 g/mol
Step 3: Convert
- Set up: [tex]\displaystyle 2.25 \ mol \ Fe(\frac{55.85 \ g \ Fe}{1 \ mol \ Fe})[/tex]
- Multiply: [tex]\displaystyle 125.663 \ g \ Fe[/tex]
Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
125.663 g Fe ≈ 126 g Fe
