7) Calculate the maximum number of electrons in each of the shells for Cu(29).14) A lead atom has an atomic number of Z=46. Calculate the number of electrons in the shells and subshells.19) Describe the ionic bonding. Support your explanation with a sketch of the model.21) Describe metallic bonding, using a model to support your description.26) Draw the lattice structures of (a) the simple cube, (b) BCC, (c) FCC, (d) CPH, and (e) BCT.32) Describe dendritic growth and how it progresses.33) Draw and describe the cooling cures (a) when a pure metal freezes and (b) when an alloy of two metals freezes.34) Calculate the Miller index for each of the planes AGDE, CDEF, CDGH, EFGH, and AGCF.35) Calculate the Miller indexes for a, b, c, d.

Your roll: experienced electron speech is adressed to: a new "freshman class" of electrons job: write a speech task: you are to pretend that you are giving a speech to a new group of electrons. be sure to mention their placement in an atom, their charge, and their role in chemical bonding (ionic and covalent) be specific!

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm