Chem%20161-2007%20final%20exam%20without%20answers

Chem%20161-2007%20final%20exam%20without%20answers - 1 Chem...

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1 1 Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 3A – STOICHIOMETRY: CHEMICAL CALCULATIONS Empir. & molec. formulas and related stoichiometry Benzene and acetylene are different substances with the same empirical formulas. Which of the following is true? A. Their molar masses will have a simple integer ratio. B. Their molecular formulas are the same. C. Their structural formulas are similar. D. They have similar chemical properties. E. They have similar physical properties. A 2 Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 5 - GASES Reaction stoichiometry 5.00 grams of alum, KAl(SO 4 ) 2 . xH 2 O, is heated in an oven, and the water vapor driven off is collected and found to exert a pressure of 1.33 atm in a 3.00 Liter container at 111 o C. Calculate the value of “x” in the hydrate. A. 2 B. 4 C. 5 D. 7 E. 12 E 3. Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 4B - CHEMICAL REACTIONS IN AQUEOUS SOLUTIONS Oxidation-Reduction Rxns Consider the following oxidation-reduction reaction: CH 4 ( g ) + NO 2 ( g ) N 2 ( g ) + CO 2 ( g ) + H 2 O( l ) Which of the following statements is true about the reaction above? A. N 2 is the oxidizing agent. B. CH 4 is the reducing agent. C. O is reduced. D. N is oxidized. E. H 2 O is reduced. B
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2 4. Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 8 – ELECTRON CONFIGURATIONS & PERIODIC TABLE TRENDS Aufbau Which box diagram is not possible as the ground state of an atom? A. ↑↓ D. ↑↓ B. ↑↓ ↑↓ E. ↑↓ ↑↓ C. ↑↓ B 5. Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 11 – STATES OF MATTER AND INTERMOLECULAR FORCES Intermolecular forces (e.g., H-bonding) Which one of the following statements is false ? A. Surface tension of water supports a water bug. B. Volatility is the tendency of a liquid to vaporize. C. When a glass tube with a small diameter is put into water, the water rises in the tube due to capillary action. D. Mercury in a small diameter glass tube has a concave meniscus because of the strong attraction between mercury and the glass wall. E. Vaporization is an endothermic process. D 6. Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 7 – LIGHT AND ATOMIC STRUCTURE Bohr hydrogen atom Calculate the wavelength of light emitted when the transition n=5 n=2 occurs in the hydrogen atom. A. 625 nm B. 546 nm C. 732 nm D. 398 nm E. 434 nm E
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3 7. Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 8 – ELECTRON CONFIGURATIONS & PERIODIC TABLE TRENDS Aufbau Which of the following would you expect to exhibit paramagnetism ? I. Fe III. Br II. S IV. Ne A. all of the above. B. II, III and IV C. I, II and III D. I, II and IV E. II and III. C 8. Chem 161-2007 Final exam Hill, Petrucci et al. CHAPTER 5 - GASES Partial pressure (mixtures of gases) Equal masses of H 2 and O 2 are placed in a container of fixed volume and temperature. What is the ratio of partial pressures of hydrogen to oxygen ( 2 2 / O H P P )?
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Chem%20161-2007%20final%20exam%20without%20answers - 1 Chem...

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