1. Homework Answers 10.31 – Constant T so P vap is constant at 28.0 mm Hg 10.47 – a) melting, b) no change, still liquid 10.49 – boils when P atm gets down to P vap 10.51 – 36.6 kJ released 10.53 – 26.9 kJ released 10.55 – 10.57 – 7.12 J/(K∙mole) 10.119 – BP = 77˚C, Pvap = 58.9 mm Hg Copyright © 2008 Pearson Prentice Hall, Inc.Chapter 1/1

2. Unit Cells in Crystalline Solids Copyright © 2008 Pearson Prentice Hall, Inc.

6. Chapter 10/6 Probing the Structure of Solids: X-Ray Crystallography Diffraction: Occurs when electromagnetic radiation is scattered by an object containing regularly spaced lines (such as a diffraction grating) or points (such as the atoms in a crystal). Interference: Occurs when two waves pass through the same region of space.

7. Copyright © 2008 Pearson Prentice Hall, Inc.Chapter 10/7 Probing the Structure of Solids: X-Ray Crystallography Bragg Equation: d = 2 sin  n

8. ATP by X-ray diffraction

11. Copyright © 2008 Pearson Prentice Hall, Inc.Chapter 10/11 Unit Cells and the Packing of Spheres in Crystalline Solids Body-Centered Cubic Packing Simple Cubic Packing

14. Copyright © 2008 Pearson Prentice Hall, Inc.Chapter 10/14 Unit Cells and the Packing of Spheres in Crystalline Solids Cubic Closest- Packing Hexagonal Closest- Packing

15. Copyright © 2008 Pearson Prentice Hall, Inc.Chapter 10/15 Unit Cells and the Packing of Spheres in Crystalline Solids Unit Cell: A small repeating unit that makes up a crystal.

16. Primitive cubic unit cell

17. Body-centered cubic unit cell

18. Body-centered cubic unit cell Primitive cubic unit cell

19. Face-centered cubic unit cell

35. Structures of Some Ionic Solids

40. H46 – C10 10.11 – 10.16, 10.23, 10.25,10.73 – 10.77(odd), 10.79*, 10.83*, 10.115, 10.121*