Question

How many molecules are in 4 moles of H20? A. 2.408 x 10^24

Answer 1

Answer:

A

Explanation:

thank the guy above me and thanks for helping

Answer 2

Answer:

A. 2.408 × 10²⁴

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

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

Stoichiometry

• Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 4 moles H₂O

[Solve] molecules H₂O

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

1. [DA] Set up:                                                                                                       $\displaystyle 4 \ mol \ H_2O(\frac{6.022 \cdot 10^{23} \ molecules \ H_2O}{1 \ mol \ H_2O})$
2. [DA] Multiply [Cancel out units]:                                                                    $\displaystyle 2.4088 \cdot 10^{24} \ molecules \ H_2O$