Answer:
62.3 mol Ca
General Formulas and Concepts:
Math
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Chemistry
Atomic Structure
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Stoichiometry
- Using Dimensional Analysis
Step-by-step explanation:
Step 1: Define
3.75 × 10²⁵ atoms Ca
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
- Set up:

- Multiply/Divide:

Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
62.2717 mol Ca ≈ 62.3 mol Ca