14C_s08_lec01_e02

14C_s08_lec01_e02 - C h e m is t r y 1 4 C L e c t u r e 1...

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Chemistry 14C Lecture 1 Spring 2008 Midterm Exam 2 Page 1 1. (4) Fill in the blanks, using no more than five words per blank . A mass spectrum is a plot of ____________________________ on the x-axis versus _____________________________ on the y-axis. This spectrum contains two types of peaks: ____________________________ (which are useful to determine molecular formula) and __________________________ (which are not useful to determine molecular formula). Questions 2-7 concern the principle components of mothballs, which are shown below. Cl Cl O Naphthalene (N) Para-dichlorobenzene (P) Camphor (C) 2. (6) Answer each question by circling the first letter (N, P, or C) of one of the three mothball components. (a) The molecule whose mass spectrum has the most intense M+1 peak is: N P C (b) The molecule whose mass spectrum has the largest m/z for M+2 is: N P C (c) The molecule whose mass spectrum has the most intense M+2 peak is: N P C 3. (8) The following IR spectrum might belong to one of the mothball components. If the spectrum belongs to the molecule named, circle “yes.” If the spectrum does not belong to the molecule named, circle “no,” and provide a brief explanation. Camphor
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14C_s08_lec01_e02 - C h e m is t r y 1 4 C L e c t u r e 1...

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