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Exam 1 - NAME(Print SIGNATURE Chemistry 310M/318M Dr Brent...

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Chemistry 310M/318M Dr. Brent Iverson 1st Midterm October 1, 2009 NAME (Print): _____________________________ SIGNATURE: _____________________________ Please Note: This test may be a bit long, but there is a reason. I would like to give you a lot of little questions, so you can find ones you can answer and show me what you know, rather than just a few questions that may be testing the one thing you forgot. I recommend you look the exam over and answer the questions you are sure of first , then go back and try to figure out the rest. Also make sure to look at the point totals on the questions as a guide to help budget your time. Note: You must have your answers written in pen if you want a regrade!!!! Please print the first three letters of your last name in the three boxes
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Honor Code The core values of the University of Texas at Austin are learning, discovery, freedom, leadership, individual opportunity, and responsibility. Each member of the University is expected to uphold these values through integrity, honesty, trust, fairness, and respect toward peers and community. (Your signature)
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10 9 8 7 6 5 4 3 2 (26) (12) (16) (20) (20) (15) (11) (23) (24) (14) (28) (21) (22) (17) (18) (287) 11 1 Page Points Total T Score HW 12 13 14 15 % Total Grade (HW score + Exam Grade)
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Pg 1 _____________(26) Signature_________________________ 1. (8 points) What is the most important question in Organic Chemistry? 2. (6 pts each) For the following molecular formulas, draw complete Lewis line structures in which all atoms (even H atoms) are drawn, lines are used as bonds, and all lone pairs are drawn. A) B) C) (CH 3 ) 3 CCH 2 CH 2 CO 2 H (CH 3 ) 2 CCHCN H 2 CCHCH 2 CHCH 2
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Pg 2 _____________(12) Signature_________________________ 3. (4 pts each) Provide an acceptable IUPAC name for the following molecules. You can ignore R and S for this one. A) CH 2 CH CH 2 CH CH CH 2 CH 2 CH 2 H 3 C B) C) CH 3 CH 3 CH 3 CH H 3 C CH 3 O Molecular Insect (You don't need to name this one!)
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Pg 3 _____________(16) Signature_________________________ 5. (5 pts each) For the following IUPAC names, draw the appropriate line angle drawing (you can ignore R and S for this). A) 5-ethyl-4-isopropyl-2-methyloctane B) cis -1- tert -butyl-3-methylcyclohexane 6. (3 pts each) Each structure shown below is drawn in the form normally used in textbooks and the scientific literature. However, as discussed in class, there are structures that better represent the actual electronic distribution of each species. In the box provided, draw the structures that better represent the true situations. P O O O O CH 3 H 3 C S H 3 C O CH 3
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Pg 4 _____________(20) Signature_________________________ 7. (5pts each) The following molecules are best represented as the hybrid of contributing structures. Draw the second important contributing structure in the space provided, including all lone pairs and formal charges. For the structure on the left, use arrows to indicate the movement of electrons to give the structure you drew.
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