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Midterm 2006 - Chemistry 213a Midterm Fall 2006 Code 111...

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Chemistry 213a Midterm Fall 2006 Code 111 Page 1 Please ensure that you have entered code 111 on your answer sheet. 1. Which one of the following molecules is the most polar? A) F B) Cl C) NH 2 D) OH E) O O 2. Which one of A E correctly assigns formal charges to the atoms indicated? Assume all atoms have a full valence shell. NH 3 N O O C N I II III I II III
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Chemistry 213a Midterm Fall 2006 Code 111 Page 2 3. Which one of the following ions is NOT stabilized by resonance? O O 4. What is the correct Lewis structure for the compound CH 3 CHCHCOSCH 3 ? (Electrons and non-bonding pairs are not present if they are not shown) H H H C H C H C O S C H H H H H H C H C H C O S C H H H H H H C H C H C S O C H H H H H H H C H C H C O S C H H H H H H C H C H C O S C H H H H
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Chemistry 213a Midterm Fall 2006 Code 111 Page 3 5. What are the hybridizations and approximate bond angles of the indicated carbon and oxygen atoms in salicylate , a product formed when aspirin is metabolized? OH O O I II III I II III A) sp sp 2 sp 3 B) 120° sp 2 sp 3 C) sp 2 120° sp 2 D) sp 109° sp 2 E) 109° 120° sp 3 6. Which one of statements A E is NOT correct about azidothymidine (AZT), an antiviral drug? NH N O O O HOCH 2 N N N
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