Question

How many molecules are in 7.32 moles of sulfur dioxide?

Answer 1

Answer:

4.41 × 10²⁴ molecules SO₂

General Formulas and Concepts:

Atomic Structure

• Compounds
• Moles

Stoichiometry

• Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 7.32 moles SO₂

[Solve] molecules SO₂

Step 2: Identify Conversions

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

Step 3: Convert

1. [DA] Set up:                                                                                                       $\displaystyle 7.32 \ moles \ SO_2(\frac{6.022 \cdot 10^{23} \ molecules \ SO_2}{1 \ mol \ SO_2})$
2. [DA] Multiply [Cancel out units]:                                                                      $\displaystyle 4.4081 \cdot 10^{24} \ molecules \ SO_2$

Step 4: Check

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

4.4081 × 10²⁴ molecules SO₂ ≈ 4.41 × 10²⁴ molecules SO₂

Answer 2

Answer:

4.41 × 10²⁴ molecules SO₂

Explanation:

The Person is right