CHM 131 - Exam1 - 2004

CHM 131 - Exam1 - 2004 - ROCHESTER 30 September 2004...

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Chemistry 131 – Preliminary Exam I 30 September 2004 8:00 a.m. to 9:30 a.m. Name: ________________________ ID #: ________________________ Workshop Meeting Time (day and hour) ________________________ (2 pts. Extra credit) This exam consists of six (6) questions, one extra credit problem, and a page of potentially useful information. Please check BEFORE you begin to make sure that you have a complete exam. Please do all your work on the pages provided. You may use the backside of pages for additional work, but please tell us that you are doing so (i.e. an arrow with a note in clear English saying "more work on back"). SHOW ALL WORK . GIVE UNITS for all answers that require them. Partial credit can only be given for those answers for which work is provided. CIRCLE YOUR ANSWER. We ask this so that we don't have to interpret what you intended as your final answer. GOOD LUCK! Prob. W.S. 1(25) 2(25) 3(25) 4(25) 5(25) 6(25) E.C.(5) Total Score ROCHESTER U N I V E R S I T Y O F University of Rochester Rochester, New York 14627-0216 COLLEGE OF ARTS AND SCIENCE DEPARTMENT OF CHEMISTRY
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1a) (5 pts.) Consider the following four samples: 1 mol of sodium nitrite 0.5 mol of sodium nitrate 1 mol of nitrogen monoxide 0.5 mol of nitrogen dioxide Circle the sample that has the most oxygen atoms. 1b) (5 pts.) Consider the following four samples 100 g of BrF 100 g of BrF 3 70 g of BrF 5 70 g of Br 2 O Circle the sample that has the most atoms. 1c)
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This test prep was uploaded on 04/17/2008 for the course CHM 131 taught by Professor Krugh during the Fall '04 term at Rochester.

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CHM 131 - Exam1 - 2004 - ROCHESTER 30 September 2004...

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