Exam 2 - Summer 2005

Exam 2 - Summer 2005 - Chemistry 12 Name Exam II Form A...

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Chemistry 12 Name _______________________ Exam II Form A Section _______________________ July 21, 2005 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 25 questions on this exam. Check that you have done all of the problems and filled in the first 25 bubbles on the scantron. 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.
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Chemistry 12 Exam 2 --------------------------------------------------------------------------------------------------------------------- 1-5. The following gases are placed in a flask under the conditions given in the table below. Use the information to answer the next 5 questions. Gas Mole fraction N 2 ??? T = 110 ° C H 2 0.156 P TOT = 4.76atm CO 2 0.221 V TOT = 6.50L CH 4 0.459 1. What is the partial pressure of N 2 in the vessel? A. 0.743 atm B. 1.05 atm C. 2.18 atm D. 0.781 atm E. 4.76 atm 2. What is the volume occupied by the CO 2 ? A. 1.014 L B. 1.44 L C. 2.98 L D. 1.07 L E. 6.50 L 3. The diagram below shows the molecular speed of the 4 gases in the vessel. Which curve corresponds to CH 4 ?
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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 Penn State.

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Exam 2 - Summer 2005 - Chemistry 12 Name Exam II Form A...

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