110 Fa07 ex2 A - Chemistry 110 Exam II Form A October 22,...

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Chemistry 110 Name _______________________ Exam II Form A Section _______________________ October 22, 2007 Student No. _______________________ IMPORTANT : On the scantron (answer sheet), you MUST clearly fill your name , your student number , section number , and test form (white cover = test form A; yellow cover = test form B). Use a #2 pencil. There are 28 questions on this exam. Check that you have done all of the problems and filled in the first 28 bubbles on the scantron. The maximum score on this exam is 28 points. Your score will be reported in percents (max 100%). Exam policy Calculators with text-programmable memory are not allowed. Relevant data and formulas, including the periodic table, are attached at the end of this exam. Your grade will be based only on what is on the scantron form. The answer key will be posted on the web after the exam (under "News"). Hints As you read the question, underline or circle key words to highlight them for yourself. Avoid errors from "mis-reading" the question. Pay attention to units and magnitudes (decimal places) of numbers obtained from calculations. There is no penalty for guessing. H C H H C H H C OH H C H H H CHEMISTRY 110 EXAM 2 October 22, 2007 FORM A ----------------------------------------------------------------------------------------------------------- 1. What is the molecular formula for the compound represented by the following structure? O OH A. C 6 H 5 O 2 B. C 7 H 6 O 2 C. C 7 O 2 H 8 D. C 3 H 3 O E. H 2 O ----------------------------------------------------------------------------------------------------------- 2. Hexane is an alkane with a chain of six carbon atoms. What is the empirical formula for this hydrocarbon? A. C 4 H 10 B. C 6 H 6 C. C 6 H 12 D. C 3 H 7 E. C 3 H 8 ---------------------------------------------------------------------------------------------------------- 3. What functional group is present in this molecule? A. alkene B. aromatic C. amine D. ketone E. alcohol -----------------------------------------------------------------------------------------------------------
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---------------------------------------------------------------------------------------------------------- 4. How many moles of oxygen atoms are in 220 mg of ethylene glycol, C 2 H 4 (OH) 2 ? A. 3.4 mol B. 4.3 mol C. 9.8 ! 10 –3 mol D. 4.9 ! 10 –3 mol E. 7.1 ! 10 –3 mol ---------------------------------------------------------------------------------------------------------- 5. What is the electron domain geometry of a molecule with 5 electron domains around the central atom? A. seesaw
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This note was uploaded on 05/24/2009 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Fall '08 term at Pennsylvania State University, University Park.

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110 Fa07 ex2 A - Chemistry 110 Exam II Form A October 22,...

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