eng-08fa-CHM2045C-e8117xr1r

eng-08fa-CHM2045C-e8117xr1r - University of North Florida...

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University of North Florida NAME _____ ________________________ CHM 2045C, General Chemistry I Exam 1 Fall 2008 16 September 2008 Instructions: Please place your calculator cover, personal belongings, notes, books, etc. , under your desk. Remove or turn backwards any caps/hats/coverings so that your face is not covered. Please turn off all other electronic devices: cell phones, ipods, etc. DO NOT BEGIN UNTIL GIVEN THE SIGNAL TO START. The time allotted for this examination is 75 minutes; this exam is scheduled to end at 9:15 am. Only allowed calculators may be used on this exam; you may be asked to erase your calculator’s memory. The first few pages include some potentially helpful information and the periodic table. There are two parts to this exam. o For part I, properly bubble in your answers on the BROWN SCANTRON. No extra time will be given to transfer answers to the scantron. o For part II, show all your work for full or partial credit. At the end of the examination, hand in the BROWN SCANTRON and partial credit portion. Remove the staple from the partial credit portion. Do not turn in the other portions of the exam. For two points (1) make sure your name and version number are on the BROWN SCANTRON and (2) make sure your name is on ALL the partial credit pages (either side of the pages). Potentially useful information 1 in = 2.54 cm (exactly) 1 lb = 453.59 g 1 L = 1.0567 qt 1 amu = 1.66053873 ×10 -24 g e = 1.60217653 × 10 -19 C ° C = 5 / 9 ( ° F – 32) ° F = 9 / 5 ° C + 32 K = ° C + 273.15 N A = 6.0221421×10 23
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NAME: ________________________ CHM 2045C Exam 1: page 3 of 11 (Repeated) For two points (1) make sure your name and the version ( rho -1-R ) are on the BROWN SCANTRON, and (2) make sure your name is on ALL the partial credit pages (either side of the pages). This is exam version rho -1-R. Part I. Problems 1 – 28 are worth 2.25 points each for a maximum of 63 points for Part I. Each problem has ONE BEST ANSWER. Bubble in your answers on the BROWN SCANTRON. No extra time will be given to transfer answers to the scantron. 1. After many chemical experiments by different scientists over many years it is found that the masses of carbonates and sulfates decrease upon heating. These studies are concisely summarized by the statement that carbonates and sulfates will form carbon dioxide and sulfur dioxide compounds upon heating. This statement is an example of a/an [a] quantification [b] law [c] observation [d] hypothesis [e] theory [ab] metric 2. Which of the following represents a mixture (homogeneous or heterogeneous)? I.
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This note was uploaded on 07/10/2011 for the course CHM 2045 taught by Professor Eng during the Fall '10 term at UNF.

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eng-08fa-CHM2045C-e8117xr1r - University of North Florida...

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