Sp06Exam1Ans - NAME (Print): _ SIGNATURE: _ Chemistry 310N...

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Chemistry 310N Dr. Brent Iverson 1st Midterm Feb. 23, 2006 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 For synthesis problems GO FOR PARTIAL CREDIT EVEN IF YOU DO NOT KNOW THE ENTIRE ANSWER!!!WRITE DOWN WHAT YOU DO KNOW IS IN THE REACTION SEQUENCE SOMEWHERE. YOU WILL GET PARTIAL CREDIT IF IT IS CORRECT
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10 9 8 7 6 5 4 3 2 (22) (22) (32) (5) (5) (5) (5) (5) (12) (21) (19) (18) (20) (13) (13) (16) (233) 11 1 Page Points Total T Score HW 12 13 14 15 16
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H O O Br O H O O OH HO HO HOH 2 C OH O HO HO HO HOH 2 C OH O OH OH OH HO O OH OH HO OH X X H O OH OH OH HO OH Signature_________________________ Pg 1 _____________(22) 1. (4 pts each) In the space provided, write the IUPAC name (including stereochemistry where appropriate) for the following two molecules: 3,3-Dimethylbutanal ( R )-2-Bromo-3-pentanone 2. (4 pts) In the space provided, draw the following molecule: ( E )-5-Oxo-2-hexenal 1 2 3 4 5 6 3. (10 pts total) On the lefthand side, D-glucose is drawn in the open chain form. For the four cyclic structures shown, draw a large "X" through the two structures that DO NOT represent the cyclic form of the D-Glucose molecule. Next, for the structures that ARE the cyclic forms of D-Glucose 1) draw small boxes around the anomeric carbon atoms then 2) draw a circle around the structure that is in the alpha ( ! ) form D-Glucose (open chain form)
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Signature_________________________ Pg 2 _____________(22) 4. (2 pts each) In each sentence, fill in the blank with the word that fits the best. You may notice a striking resemblance between these sentences and rules of the day!!! Atomic nuclei, like electrons, have a quantum mechanical property of ________________, which can be thought of as a small magnetic field around the nucleus created as if the ________________ charge of the nucleus were circulating. The difference in energy between the +1/2 and -1/2 nuclear spin states is proportional to the strength of the _____________________ field felt by the nucleus. Electron density is induced to _______________________ in a strong external magnetic field, which in turn produces a magnetic field that _________________________ the external magnetic field. The greater the electron density around a nucleus, the more ____________________ it is, and the lower the energy (frequency) of electromagnetic radiation required to flip its nuclear spin. __________________ hydrogen atoms in a molecule give the same NMR signal, because they have an
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Sp06Exam1Ans - NAME (Print): _ SIGNATURE: _ Chemistry 310N...

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