Upcoming SlideShare
×

# Mole concepts

573 views

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
573
On SlideShare
0
From Embeds
0
Number of Embeds
9
Actions
Shares
0
17
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Mole concepts

1. 1. Mole Concepts
2. 2. Avogadro’s Principle <ul><li>equal volumes of gases at the same temperature and pressure, contain equal numbers of particles </li></ul><ul><li>molar volume – 1 mole of any gas at STP occupies 22.4 L </li></ul>
3. 3. <ul><li>STP – standard temperature pressure is: </li></ul><ul><li>0.00 ºC </li></ul><ul><li>1.0 atm of pressure </li></ul><ul><li>1 mole 22.4 L </li></ul><ul><li>22.4 L 1 mole </li></ul><ul><li>* Conversion factors for relating moles to volume </li></ul>OR
4. 4. Molarity (M) <ul><li>the number of moles of solute dissolved per liter of solution </li></ul><ul><li>M = moles of solute </li></ul><ul><li> L of solution </li></ul>
5. 5. Measure mass of solute (convert it to moles ) Use a volumetric flask to bring it to 1.0 L of solution
6. 6. Percent Composition <ul><li>percent by mass of any element in a compound </li></ul><ul><li>mass of element x 100 = percent composition </li></ul><ul><li>mass of compound </li></ul>
7. 7. <ul><li>What is the percent composition of water? </li></ul><ul><li>H 2 O </li></ul><ul><li>% H = 2.016 g H X 100 = 11.2 % H </li></ul><ul><li> 18.016 g H 2 O </li></ul><ul><li>% O = 15.99 g 0 X 100 = 88.8 % O </li></ul><ul><li> 18.016 g H 2 O </li></ul>