2. How many moles are found in 3.2 x 1023 atoms of NaCl?

0.53 mol NaCl

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

3.2 × 10²³ atoms NaCl

Step 2: Identify Conversions

Avogadro's number

Step 3: Convert

= 0.531385 mol NaCl

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

0.531385 mol NaCl ≈ 0.53 mol NaCl

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.