Question

9.27 mol of oxygen is equal to______molecules of oxygen Please help I need it

Answer 1

Answer:

5.58 × 10²⁴ molecules 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

• Reading a Periodic Table
• Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

• Using Dimensional Analysis

Explanation:

Step 1: Define

9.27 mol O₂ (Oxygen)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

1. Set up:                             $\displaystyle 9.27 \ mol \ O_2(\frac{6.022 \cdot 10^{23} \ molecules \ O_2}{1 \ mol \ O_2})$
2. Multiply/Divide:               $\displaystyle 5.58239 \cdot 10^{24} \ molecules \ O_2$

Step 4: Check

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

5.58239 × 10²⁴ molecules O₂ ≈ 5.58 × 10²⁴ molecules O₂