Chem%20161-2009%20final%20exam%20without%20answers

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Unformatted text preview: 1 Chemistry 161 Final Exam December 17, 2009 Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 11 States of Matter and Intermolecular Forces Structures and types of solids (e.g., crystal structures) 1. A unit cell of TiO 2 contains one Ti 4+ ion in the center of each face. What is the total number of ions contained in that cell? A. 3 B. 6 C. 8 D. 9 E. 10 Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 3B - Stoichiometry Reaction stoichiometry 2. Consider the following series of unbalanced reactions: FeO(s) + O 2 (g) Fe 2 O 3 (s) Fe 2 O 3 (s) + KCN(aq) K 3 Fe(CN) 6 (aq) K 3 Fe(CN) 6 (aq) + K 2 S(aq) Fe 3 S 4 (s) + KCN(aq) Assuming 100% yield, how many moles of Fe 3 S 4 can be produced from six moles of FeO? Also, assume O 2 , KCN, and K 2 S are all present in excess. A. 2 B. 3 C. 4 D. 5 E. 6 Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 11 States of Matter and Intermolecular Forces Intermolecular forces (e.g., H-bonding) 3. Which of the following species is expected to have the lowest vapor pressure? A. CH 4 B. CH 2 Cl 2 C. NH 3 D. CH 3 OCH 3 E. CH 3 OH Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 3 - Stoichiometry Balancing Chemical Equations 4. When the following reaction is correctly balanced using the smallest possible whole numbers, what is the coefficient of CO 2 (g)? 2 C 10 H 15 N(s) + O 2 (g) CO 2 (g) + H 2 O(g) + NO 2 (g) A. 40 B. 15 C. 30 D. 25 E. 20 Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 2 Atoms, Molecules and Ions Nature of the atom (protons, neutrons, electrons, symbols, etc.) including isotopes 5. Silicon has three major isotopes: 28 Si (isotopic mass 27.9769), 29 Si (isotopic mass 28.97649) and 30 Si (isotopic mass 29.97376, fractional abundance 3.10%). What is the fractional abundance of 29 Si? A. 82.0% B. 18.0% C. 3.57% D. 4.72% E. 95.3% Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 1 Chemistry: Matter and Measurement Classification of Matter 6. Which of the following correctly identifies a substance, a solution and a heterogeneous mixture? Substance Solution Heterogeneous mixture A. Marble Nickel Bronze B. Nickel Marble Bronze C. Nickel Bronze Marble D. Bronze Nickel Marble E. Bronze Marble Nickel Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 10 Bonding Theory and Molecular Structure VSEPR, molecular polarity and bond angles 7. Which one of the following molecules is listed with an incorrect shape? A. XeF 4 ; square planar B. IF 5 ; square pyramidal C. O 3 ; angular D. BCl 3 ; trigonal planar E. SeF 4 ; tetrahedral 3 Chem 161-2009 Final exam Hill, Petrucci et al. Chapter 9 Chemical Bonds Unsaturated hydrocarbons 8. In the polymerization reaction, A. the repeating unit B. the monomer C. the copolymer D. allotrope E. isomer Chem 161-2009 Final exam Hill, Petrucci et al....
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This note was uploaded on 03/08/2011 for the course CHEM 161 taught by Professor Vacillian during the Fall '08 term at Rutgers.

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Chem%20161-2009%20final%20exam%20without%20answers - 1...

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