Exam 3 Key

Exam 3 Key - Chemistry 105 A Exam 3 Dr Jessica Parr First...

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1 Chemistry 105 A PLEASE PRINT YOUR NAME IN BLOCK LETTERS Exam 3 Name: __________________________________ 10/30/08 Last 4 Digits of USC ID:____ ____ ____ ____ Dr. Jessica Parr Lab TA’s Name: _________________________________ Lab: Tu 9 / Tu 1 / Tu 4 / W 1 / W 4 / F 1 Please circle lab section above . Question Points Score Grader 1 8 2 8 3 8 4 10 5 6 6 6 7 12 8 6 9 12 10 6 11 8 12 10 Total 100 Please Sign Below: I certify that I have observed all the rules of Academic Integrity while taking this examination. Signature: _______________________________________________________________ Instructions: 1. You must show work to receive credit. 2. If necessary, please continue your solutions on the back of the preceding page (facing you). 3. YOU MUST use black or blue ink. (No pencil, no whiteout, no erasable ink.) 4. There are 12 problems on 9 pages. Please count them before you begin. A periodic table and some useful equations can be found on the last page. 5. Good luck!! =) First Letter of last Name
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2 1. (8 pt) Identify the following processes as either endothermic or exothermic a. evaporation of isopropyl alcohol _____________________ b. a reaction with Δ H = -275 kJ _____________________ c. freezing of water _____________________ d. sublimation of dry ice _____________________ 2. (8 pt) Determine the enthalpy of the following reaction with the given enthalpies of formation. O
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Exam 3 Key - Chemistry 105 A Exam 3 Dr Jessica Parr First...

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