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? 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?
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