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Week 4 Exercises Prepare written answers to the following exercises :
1 . Imagine that you are an environmental scientist . Working in collaboration with a university chemist , you were able to determine from mass spectrometry that four elements exist in your soil samples . They are Se , Sn , Pb , and Cd .
You need to determine which elements will most likely combine with oxygen to produce oxides that are present in your sample . To do so , refer to the periodic table to determine the electron configuration and ionization energy of each element . This will show the number of valence electrons for each element .
2 . Imagine that , as an employee of a pharmaceutical company , you are working on an H-K- ATPase . It is the enzyme that pumps acid into the stomach to help in digestion . You are trying to determine whether a compound will fit inside the pocket of this enzyme in order to inhibit the enzyme . To do so , you must know the molecular shape of the compound .
Draw the Lewis structure and determine the molecular geometry of the following compounds that may fit into the active site of this enzyme :
3 . Imagine that you work as a chemist in a battery manufacturing plant . You are asked to try a variety of substances that can be used to generate an ion potential necessary to produce electricity . Ionic compounds produce ions that can generate an ion potential when placed in an aqueous solution .
Name the various compounds in the following table and label them as ionic or molecular :
CHM 109 Week 4 Individual Assignment Text Exercises