Fall 09. Exam1

Fall 09. Exam1 - CHEMISTRY 2101 Fall 2009 Dr. Philippe...

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CHEMISTRY 2101 Name___________________________ Fall 2009 Dr. Philippe Buhlmann Hour Exam I October 9, 2009 Page 1 HOUR EXAM I There are 5 pages with problems to this exam. Put your name (or initials on subsequent pages) at the top of EACH PAGE ! Show your work! Problem Points Possible 1 20 2 25 3 30 4 25 Total 100 We will correct everything that we can read— promised! Answer the whole question! Manage your time! Move on if you get stuck with a problem.
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CHEMISTRY 2101 Name___________________________ Fall 2009 Dr. Philippe Buhlmann Hour Exam I October 9, 2009 Page 2 (1) (20 points in total) Statistics The oxalate concentrations in five apples were determined as: 659; 660; 740; 757; 899 μg/g The oxalate concentrations in four pears were determined as: 230; 269; 278; 278 μg/g (a) 5 points Is the value of 899 μg/g an outlier? (b) 15 points Is there a statistically relevant difference (at the 95% level) between the oxalate concentrations in these apples and pears? Ignore outliers if that is permissible.
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CHEMISTRY 2101 Name___________________________ Fall 2009 Dr. Philippe Buhlmann Hour Exam I October 9, 2009 Page 3 (2) (25 points) A pH Buffer Design a 100 mM buffer solution to have a pH = 2.75. Make all necessary
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This note was uploaded on 10/02/2011 for the course CHEM 2101 taught by Professor Bulman during the Spring '11 term at Minnesota.

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Fall 09. Exam1 - CHEMISTRY 2101 Fall 2009 Dr. Philippe...

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