1. The Mole The Basic Chemical Unit

2. A Mole is : A chemical quantity A Mole of any substance is Chemically equivalent to a mole of any other substance

3. A Mole is : Anything that has the same number of particles as the number of atoms in exactly 12.0 grams of Carbon-12.

4. Avogadro’s Number 6.02 x 10 23

5. Representative Particles HOW TO COUNT

6. Elements Atoms

7. Covalent Compounds Molecules

8. Ionic Compounds Formula Units

9. One Mole of : Carbon = 6.02 x 10 23 Carbon Atoms Silicon = 6.02 x 10 23 Silicon atoms

10. One Mole of : CO 2 = 6.02 x 10 23 Carbon DiOxide Molecules HNO 3 = 6.02 x 10 23 Nitric Acid Molecules

11. One Mole of : Platinum = _______ Platinum Atoms Scandium = ______ Scandium atoms

12. One Mole of : CaCO 3 = _______ Calcium Carbonate molecules C 12 H 22 O 11 = ______ Sugar molecules

13. Molar Mass

14. Defination The mass of one mole of a substance.

15. One Mole of : Carbon = 12.0 g Silicon = 28.1 g Barium = 137.3 g Helium = 4.0 g

16. One Mole of : Element = (molar mass) g Compound = (mol mass) g Substance = (mol mass) g

17. One Mole of : Aluminum = ____ g Arsenic = ____ g Silver = _____ g Xenon = _____ g

18. One Mole of : CO 2 = 44.0 g SO 3 = 80.1 g BaSO 4 = 233.4 g (NH 4 ) 3 PO 4 = 149.0 g

19. One Mole of : CaCl 2 = ____ g CoCO 3 = ____ g Pb(NO 3 ) 2 = _____ g Al 2 (CO 3 ) 3 = _____ g

20. One Mole of : CaCl 2 = 111.1 g CoCO 3 = 118.9 g Pb(NO 3 ) 2 = 331.2 g Al 2 (CO 3 ) 3 = 234.0 g

21. Molar Volume

22. The volume of one mole of gas @STP.

23. STP Standard Temperature and Pressure

24. 1 mole of gas @ STP 22.4 liters

25. Does not matter what the gas is.

26. Converting between Moles and Grams: 1 mol = (molar mass) g Conversion factors: __ mol x ___ g x

27. Converting between Moles and Grams: 2.8 mol Ag = ? g Ag 2.8 mol x 57.9 g Mg = ? mol Mg 57.9 g x

28. Converting between Moles and Atoms: 2.8 mol Ag = ? atoms of Ag 2.8 mol x 57.9 g Mg = ? atoms Mg 57.9 g x

29. Convert 14.9 g H 2 Convert 14.9 g H 2 O into moles 14.9 g x = 0.828 mol 18.02 g H 2 O 1 mol

30. Convert 3.4 mol H 2 Convert 3.4 mol H 2 O into grams 3.4 mol x 18.02 g H 2 O 1 mol = 61.2 grams

31. Convert 25.1 g of CO 2 Convert 25.1 g of CO 2 into moles: 25.1 g x 1 mol CO 2 44.01 g CO 2 = 0.570 mol

32. Convert 35.8 g H 2 Convert 35.8 g H 2 O into molecules: 35.8 g x = 1.20x10 24 molecules 18.02 g H 2 O 6.02x10 23 molecules

33. Convert 0.191 moles of Cl 2 Convert 0.191 moles of Cl 2 into molecules: 0.191 mol x = 1.15x10 23 molecules 1 mol 6.02x10 23 molecules

34. Convert 2.88x10 24 molec- ules of Cl 2 Convert 2.88x10 24 molec- ules of Cl 2 into moles: 2.88x10 24 molecules x = 4.78 moles 1 mol 6.02x10 23 molecules

35. What is the mass of 15 atoms of gold? 15 atoms x 6.02x10 23 atoms 196.97 g 1 mole X

36. What is the mass of 15 atoms of gold? = 4.91 x 10 -21 g