14C_s10_lec02_e02

14C_s10_lec02_e02 - Chemistry 14C 1. Lecture 2 Spring 2010...

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Chemistry 14C Lecture 2 Spring 2010 Exam 2 Page 1 Page 1 score = 1. (6) Consider the mass spectrum of Nifurtimox. (a) Write a number in the blank. M has m/z = ___________________. (b) When the relative abundance of M is 100%, the relative abundance of M+1 is (circle the best estimate): 11.1% 11.3% 11.8% 12.2% 12.4% 12.9% 13.3% More than 13.4% (c) When the relative abundance of M is 100%, the relative abundance of M+2 is (circle the best estimate): Less than 0% 0% 2% 4% 6% 8% 10% More than 10% 2. (2) An impurity was detected in one batch of Nifurtimox. The mass spectrum of the impurity contains a peak at m/z = 96. What might the impurity be? Circle one or more of the following: Molecule A Molecule B Molecule C Molecule D Molecule E None of these Cannot determine 3. (2) Which molecule(s) violate the nitrogen rule? Circle all that apply: Molecule A Molecule B Molecule C Molecule D Molecule E Nifurtimox None of these 4. (2) How many DBE in molecule C ? Circle one: 0 1 2 3 4 5 6 7 8 9 10 Cannot determine Questions 5 and 6 refer this IR spectrum: 5. (6) After each function group name, write ‘absent’, ‘present’, or ‘cannot determine’, as appropriate. Alcohol: ___________________________ Alkene: ___________________________ Alkyne: ___________________________ Ether: _____________________________ _ Ketone: ____________________________ Nitrile: ____________________________
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Chemistry 14C Lecture 2 Spring 2010 Exam 2 Page 2 Page 2 score = 6. (2) Circle the molecule which best fits the IR spectrum of question 5: Molecule A Molecule B Molecule C Molecule D Molecule E Nifurtimox None of these 7.
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This note was uploaded on 09/06/2011 for the course CHEM 140A taught by Professor Whiteshell during the Fall '04 term at UCSD.

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14C_s10_lec02_e02 - Chemistry 14C 1. Lecture 2 Spring 2010...

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