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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____ 5. Light has characteristics of a wave and characteristics of a particle. The speed of light c is constant and equal to the product of the wavelength, ë, and the frequency, í. The energy, E, of a single photon is proportional to its frequency, í, via a proportionality constant called Planck's constant, h. Which one of the following statements is incorrect ? A. Short-wavelength light is more energetic than long-wavelength light. B. Blue light (480 nm) is of higher frequency than red light (700 nm). C. In a photoelectron experiment with an unknown metal, it was found that red light was energetic enough to cause an electron to be ejected. This means that blue light will also cause the electron to be ejected. D. The frequency of a bright red light (high amplitude) is greater than the frequency of a dim red light (low amplitude). E. The velocity of a bright red light (high amplitude) is equal to the velocity of a dim red light (low amplitude). ____ 6.
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This note was uploaded on 03/05/2010 for the course CHE 131 taught by Professor Kerber 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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