Question

6.) 50.0 mol H2O
? molecules

Answer 1

3.01 × 10²⁵ molecules H₂O

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

• Using Dimensional Analysis
• Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Step-by-step explanation:

Step 1: Define

50.0 mol H₂O

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

`\displaystyle 50.0 \ mol \ H_2O((6.022 \cdot 10^(23) \ molecules \ H_2O)/(1 \ mol \ H_2O) )` = 3.011 × 10²⁵ molecules H₂O

Step 4: Check

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

3.011 × 10²⁵ molecules H₂O ≈ 3.01 × 10²⁵ molecules H₂O