CHEM1300F11-Final-v2-Answers

CHEM1300F11-Final-v2-Answers - CHEM 1300 final exam, Fall...

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CHEM 1300 final exam, Fall 2011 December 14, 2011 Version 2 Answer Key 3 hour exam Page 1 Part A 1. Which exam version are you writing (see the header above)? This question is not worth any marks, but no concessions will be made if you answer it incorrectly. a. Version 1 b. Version 2 2. The concentration of a solution prepared by dissolving 10.0 g of sodium chloride in sufficient water to make 750.0 mL of solution is: a. 0.0133 M b. 0.133 M c. 0.228 M d. 0.456 M e. 0.0750 M 3. Which radiation has the highest frequency? a. green visible light b. radio waves c. infrared radiation d. microwave radiation e. cell phone radiation 4. Electrical (Coulomb) energy: a. Increases in magnitude as the distance between charged particles decreases. b. Is greater for two Ca 2+ cations 10 pm apart than for two Na + cations 10 pm apart. c. Is negative for two oppositely charged particles. d. Is the potential energy associated with the forces of attraction and repulsion between electrically-charged particles. e. All of the above. 5. CANCELLED . A police radar unit is operating at a frequency of 9.527 gigahertz (10 9 Hz). What is the wavelength of the radiation being employed? a. 631.3 nm b. 2.858 nm c. 31.47 cm d. 2.858×10 18 m e. 6.313×10 –24 m
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CHEM 1300 final exam, Fall 2011 December 14, 2011 Version 2 Answer Key 3 hour exam Page 2 6. The figure below represents the energy level diagram for the hydrogen atom, and the arrows labeled a – f are possible electron transitions. Rank the transitions that involve the emission of a photon from lowest to highest frequency. a. a < b < f b. d < e < c c. c < e < d d. a < c < b < e < f < d e. d < f < e < b < c < a 7. The notation for the subshell with n = 5 and l = 3 is: a. 5 d b. 5 p c. 5 f d. 3 d e. 3 h 8. A possible set of quantum numbers for an electron in the partially filled subshell in a potassium atom in its ground state configuration would be n l m l m s a. 4 0 0 b. 4 1 0 ½ c. 4 2 1 ½ d. 3 0 0 ½ e. 3 1 0 9. Which one of the following pictures shows a 2 p orbital? a. b. c. d. 10. Which atom has the smaller 3 s orbital? a. An atom with fewer protons b. An atom with more protons c. An atom with more neutrons d. An atom with fewer neutrons e. The size of the 3 s orbital is the same for all atoms. n = 1 n = 2 n = 3 n = 4 c d a b e f Energy
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CHEM 1300 final exam, Fall 2011 December 14, 2011 Version 2 Answer Key 3 hour exam Page 3 11. In the ground state electron configuration of gold (Au), how many electrons are there in the 3 p orbitals? a. 0 b. 1 c. 2 d. 3 e. 6 12. Place the following species in order of decreasing radius. 2 Te F 2 O a. F > 2 O > 2 Te b. F > 2 Te > 2 O c. 2 O > F > 2 Te d. 2 Te > 2 O > F e. 2 Te > F > 2 O 13. Which one of the following orbital diagrams represents the ground state electron configuration of a Cr 3+ cation? 4 s 3 d 4 s 3 d a. [Ar] d. [Ar] b. [Ar] e. [Ar] c. [Ar] 14. Choose the diamagnetic species from below.
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This note was uploaded on 12/19/2011 for the course AP CHEM 1300 taught by Professor James during the Fall '11 term at Manitoba.

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CHEM1300F11-Final-v2-Answers - CHEM 1300 final exam, Fall...

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