e1_f05_131_key

e1_f05_131_key - CHE 131 Exam 1 Key Fall 2005 Form 0...

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CHE 131 Exam 1 Key Fall 2005 Form 0 Multiple Choice (4 points each) Identify the letter of the choice that best completes the statement or answers the question. 1. Aspirin melts at 275 ° F. Correctly estimating this temperature in Celsius yields: a. 175 ° C b. 63 ° C c. 275 ° C d. 135 ° C e. 487 ° C 2. How many microliters are in 89.63 L? a. 8.963 × 10 -7 μL b. 8.963 × 10 7 μL c. 8.963 × 10 -4 μL d. 8.963 × 10 4 μL e. 8.963 × 10 10 μL 3. Which alkane will have the highest boiling point? a. propane b. heptane c. decane d. nonane e. methane 4. Cumene contains only carbon and hydrogen. Combustion of 47.6 mg of cumene produces 156.8 mg of CO 2 and 42.8 mg of H 2 O. The molar mass of the cumene is between 115 and 125 g/mol. What is the molecular formula of cumene? a. C 3 H 4 b. C 9 H 12 c. C 9 H 9 d. CH e. None of the above.
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CHE 131 Exam 1 Key, Fall 2005, Form 0 Page 2 of 5 5. Which of the following is not part of Dalton's Atomic Theory? a. Matter is not created nor destroyed in a chemical reaction; the atomic arrangements are changed. b. Atoms of a given element have the same mass. c. Atoms of different elements combine in whole number quantities. d. An atom of one element can be chemically transformed into a different type of atom. e. Atoms of different elements have different masses.
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This note was uploaded on 10/11/2008 for the course CHE 131 taught by Professor Kerber during the Fall '08 term at SUNY Stony Brook.

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e1_f05_131_key - CHE 131 Exam 1 Key Fall 2005 Form 0...

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