Problem Set 10 Key CHEM103A Dr. Keller

Problem Set 10 Key CHEM103A Dr. Keller - CHEMISTRY 103A,...

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C C C N C F F F H H H H S F C N CHEMISTRY 103A, Sections 7-10 Problem Set 10: 10 Points Due Date: Midnight, Friday, November 9, 2007 ENTER YOUR ANSWERS ON THE D2L WEB SITE http://d2l.arizona.edu Problem 1(a). In the Lewis structure shown above <FNC is 60 o 90 o 109.5 o 120 o 180 o Problem 1(b) A Lewis structure for FSCN is shown above. The formal charge of the sulfur atom is -2 -1 0 +1 +2 Problem 2. (eight points) The problem deals with a 0.0337 mol sample of a gas (pure molecular compound) initially in a 2.05 L container at 317 K. All data are three significant figure accuracy.
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(0.0337 )(0.0821 / )(317 ) 0.428 (2.05 ) nRT mol atmL molK K P atm V L = = = (0.0337 )(0.0821 / )(415 ) 0.560 (2.05 ) nRT mol atmL molK K P atm V L = = = (0.0337 )(0.0821 / )(415 ) 1.46 (0.788 ) nRT mol atmL molK K P atm V L = = = (a) What is the gas pressure in atm? (b) The temperature of the gas sample was increased to 415 K, but the container volume remained unchanged (2.05 L). What is the new pressure in atm? (c) While keeping the temperature at 415 K, the volume of the container was
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This homework help was uploaded on 04/14/2008 for the course CHEM 103a taught by Professor Weso during the Fall '08 term at University of Arizona- Tucson.

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Problem Set 10 Key CHEM103A Dr. Keller - CHEMISTRY 103A,...

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