e1_f06 - CHE 131 Exam 1 Fall 2006 Multiple Choice 4 points...

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CHE 131 Exam 1, Fall 2006 Multiple Choice - 4 points each Identify the letter of the choice that best completes the statement or answers the question and bubble in this choice on the Scantron form. 1. Adipic acid contains 49.32% C, 43.84% O, and 6.85% H by mass. What is its empirical formula? A. C 3 H 5 O 2 B. C 3 H 3 O 4 C. C 2 HO 3 D. C 2 H 5 O 4 E. C 3 HO 3 2. How many carbon atoms are in an alkane with 34 hydrogen atoms? 3. Which of the following pairs of substances are allotropes? 4. How many protons, neutrons, and electrons does a 65 Cu atom have?
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