22.  (WCSU24.[x], 8 points) You are designing a new brand of hot pack using CaCl2 and water. The thermochemical equation of the dissolution process is shown below.   CaCl2(s)      

17. Sketch the plot below and draw the curve you would expect for the successive ionization reactions of beryllium. (You do not need to indicate specific IE values.) (WCSU24, 4 points)  IE1         Be(g) 

14. (WCSU24.[x], 8 points) Draw the complete Lewis structures (including lone pairs and formal charges) for the following molecules/ions: a.  ClO2- b.  CH4O   Periodic Table   In the box below, enter the total number of lone pairs in the two structures (a+b).

(WCSU24) A neutral atom in an excited state has the following electron configuration: 1s2 2s2 2p6 3s2 3p5 4s2 3d2 4p1   a.  What is the identity of the atom?  (enter symbol) [blank1] b. If the excited electron relaxes to its ground state:             i. Energy will be (  absorbed  / released  /  it depends  ):  [blank2]            ii.  The sign of ΔE will be (positive  / negative  /  neither):  [blank3]   c.  What is the ground state electron configuration (use core notation)? [blank4] d.   How many unpaired electrons are there in the ground state atom? [blank5] e.   Give one set of possible quantum numbers for an electron in a 3s orbital.           n = [blank6], l = [blank7], ml = [blank8], ms = [blank9]   Periodic Table

(WCSU24) From the dropdowns, identify whether the compound contains ionic bonds, covalent bonds, or both. a)  SiO2  [drop1] b) cobalt(II) bromide   [drop2] c)  sulfur hexafluoride  [drop3] d) CaCO3 [drop4]    Periodic Table

(WCSU24) The cross sections of three different ionic compounds (labeled Compound 1, 2 and 3) are displayed in the figures below. In the figures, the charge on each ion is indicated, and the diameter of each circle reflects the diameter of each ion.    Rank these compounds in order of increasing melting point. lowest [drop1] < [drop2] < [drop3] highest

(WCSU24) Select all functional groups present in the structure of the drug.  

17.  (WCSU24.[x], 8 points) Zinc gluconate (C12H22O14Zn, MW = 455.685 g/mol) is the active ingredient in Cold-Eeze lozenges.  The label claims that zinc supplements can shorten the common cold by 42%.    a. What is the mass percent of zinc in zinc gluconate? b. There are 94 mg of zinc gluconate in a Cold-Eeze lozenge, how much zinc is consumed?   Periodic Table   In the box below, enter the mass of zinc consumed from part b.

Is ionization energy always a positive or negative value?  Explain why in just a few words. (WCSU24)

(WCSU24) Below is the structure of glutathione, a powerful antioxidant produced in the liver that plays a role in removing free radicals that can cause cell damage.  Identify the formal charges on the atoms A-D.  All the lone pairs are drawn in for you.  Labeled Atom Formal Charge A [blank1] B [blank2] C [blank3] D [blank4] , Periodic Table