301MHWSet1Fl11ans - Homework Problem Set 1 Iverson...

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Homework Problem Set 1 Iverson CH310M/318M Due Wednesday, Sept. 7 1 Chemistry 310M/318M Dr. Brent Iverson 1st Homework August 26, 2011 NAME (Print): _____________________________ SIGNATURE: _____________________________ Please print the first three letters of your last name in the three boxes
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Homework Problem Set 1 Iverson CH310M/318M Due Wednesday, Sept. 7 2 (8pts) Fill in the blank with the most appropriate word(s), number(s), or symbol(s). A. C-Br Br C H H H B. C-O O C H H H H C. O-H D. C-N N C H H H H H O C H H H H 1. The most important question in chemistry is: _________________________________________? Where are the electrons 2. Atoms prefer a filled ____________________ shell of electrons. The vast majority of stable bonding in molecules takes place in such a way that this is accomplished. valence 3. Neutral carbon takes part in ____ bonds and has ____ nonbonded pairs of electrons. 4 0 4. Neutral nitrogen takes part in ____ bonds and has ____ nonbonded pairs of electrons. 3 1 5. If a carbon atom in a molecule has three bonds and one nonbonded pair of electrons around it OR if an oxygen atom has one bond and three nonbonded pairs of electrons around it, either atom will have a ____ formal charge. -1 6. When two atoms of different electronegativity form a covalent bond, the majority of shared electron density is found around the ____________ electronegative atom. more 7. (4 pts) Use the symbol to indicate on the structure the direction of the dipole of the bond listed.
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Homework Problem Set 1 Iverson CH310M/318M Due Wednesday, Sept. 7 3 8. (1 points) One more time for emphasis, what is the most important question in Organic Chemistry? Where are the electrons? 9. (5 pts) 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 and formal charges are drawn. A) B) D) (CH 3 ) 3 CCH 2 CH 2 CO 2 H C C C H H H C H H H C H H C (CH 3 ) 2 CCHCN H 2 CCHCH 2 CHCH 2 H H C O O H C C H H H C C H H C H H H C C C C H C N H H H H H H H H H E) HCON(CH 3 ) 2 C H O N C C H H H H H H CH 3 OCH 2 CH 2 NH 3 C) C H H H O C H H C H H N H H H
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Homework Problem Set 1 Iverson CH310M/318M Due Wednesday, Sept. 7 4 H. CH 2 CHCHCH 2 F. CH 3 CH 2 CH 3 C C C H H H H C H H C H H C H H H G. (CH 3 ) 2 CHCH 3 C C C C H H H H H H H H H H C H H H N H H C H H H 9 (cont.) (4 pts) 10. (5 pts) Some of the molecules shown below have formal charges. For those that do, write the correct formal charge next to the appropriate atom. IN ADDITION, SOME OF THE ATOMS ON THESE MOLECULES NEED LONE PAIRS ADDED. ADD ALL VALENCE LONE PAIRS OF
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301MHWSet1Fl11ans - Homework Problem Set 1 Iverson...

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