e1_131_f08 - CHE 131 Exam 1, Fall 2008 Multiple Choice, 4...

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CHE 131 Exam 1, Fall 2008 Multiple Choice, 4 points each On the Scantron form, bubble in the letter of the one choice that best completes the statement or answers the question. No credit will be given for multiple answers. ____ 1. A ribbon has the following experimentally determined dimensions: a thickness of 25 micrometers, a length of 2.500000 km, and a width of 25.0000 decimeters. What is the corresponding volume of this body? A. 1.6 x 10 –6 m 3 B. 1.56 x 10 –6 m 3 C. 1.5625 x 10 5 cm 3 D. 1.6 x 10 5 cm 3 E. 6.3 x 10 2 mm 3 ____ 2. What is the charge on the iron atoms in Fe 2 O 3 ? A. +1 B. +2 C. +3 D. -2 E. -3 ____ 3. The correct name of K 2 SO 4 is: A. dipotassium sulfur trioxide B. potassium sulfite C. potassium sulfate D. dipotassium sulfite E. potassium sulfide ____ 4. What is the correct name of SO 3 ? A. sulfur oxide B. sulfur trioxide C. ozone sulfide D. sulfur ozonide E. trioxygen sulfide
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____ 6. Two important isotopes of uranium are 238 92 U and 235 92 U. Which one of the following statements about these two isotopes is incorrect ? A. An atom of either isotope will contain 92 protons. B. An atom of 235 92 U has less mass than an atom of 238 92 U. C. An atom of either isotope will contain 92 electrons. D. An atom of 238 92 U contains 146 neutrons. E. The nuclear charge on an atom of 235 92 U is higher than the nuclear charge on an atom 238 92 U. ____ 7. Which name corresponds to the factor 10
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This note was uploaded on 09/23/2010 for the course CHEM 131 taught by Professor Wong during the Fall '08 term at SUNY Stony Brook.

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e1_131_f08 - CHE 131 Exam 1, Fall 2008 Multiple Choice, 4...

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