1. The Mole

2. What is the a mole? A unit to measure the amount of a substance. Commonly abbreviated mol. The symbol is n

3. Mole Map atoms, molecules, form. units molesgrams volume of a gas (L) use 6.02 x 10 23 use 22.4 L formula mass

4. Avogadro's Number 1 mole = 6.02 x 10 23

5. Avogadro’s Number USED TO DETERMINE THE NUMBER OF PARTICLES THROUGH DIMENSIONAL ANALYSIS o Molecules o Atoms

6. How many moles are there in … 5.76 x 10 24 atoms Al 3.75 x 10 24 atoms C 3.58 x 10 24 atoms Fe 2.50 x 10 24 molecules Zn 9.55 mol Al 6.23 mol C 0.595 mol Fe 4.15 x 10 -4 mol Zn

7. Moles and Volume

8. 22.4 L = 1 mol

9. Determine the number of moles… 22.8 L O 2 60.4 L H 2 0.454 L Xe 5.98 L F 2 1.02 mol O 2 2.70 mol H 2 0.0203 mol Xe 0.267 mol F 2

10. Mass and the Mole

11. Molar Mass (M) The mass in grams of one mole of any pure element Units: grams/mol (g/mol)

12. Atomic Mass The atomic mass of an element is the molar mass of that element. What is the molar mass of manganese?

13. M=m/n molar mass = grams/moles

14. Calculate the mass in grams of 0.0450 moles of chromium. 2.34 g Cr

15. Determine the mass of … 3.57 mol Al 42.6 mol Si 3.45 mol Co 2.45 mol Zn 96.3 g Al 1.20 x 10 3 g Si 203 g Co 1.60 x 10 2 g Zn

16. Determine the number of moles… 25.5 g Ag 300.0 g S 125 g Zn 1.00 kg Fe 0.236 mol Ag 9.355 mol S 1.91 mol Zn 17.9 mol Fe

17. How many grams are in 2.5 x 10 22 atoms of lithium? 2.5 x 10 22 atoms 6.02 x 10 23 atoms 1 mol 6.94 g Li