Question

How many moles are represented by 3.01 x10^24 oxygen atoms?

Answer 1

5.00 mol O₂

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

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

3.01 × 10²⁴ atoms O₂

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

1. Set up:
   `\displaystyle 3.01 \cdot 10^(24) \ atoms \ O_2((1 \ mol \ O_2)/(6.022 \cdot 10^(23) \ atoms \ O_2))`
2. Multiply/Divide:
   `\displaystyle 4.99834 \ mol \ O_2`

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

4.99834 mol O₂ ≈ 5.00 mol O₂