CHM_256_Worksheet_1_crib

CHM_256_Worksheet_1_crib - CHM256 Spring2014 Worksheet1 1....

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CHM 256 Spring 2014 Worksheet 1 1. Name the following compounds: a) 3 phenyltoluene b) ( S ) (3 chlorohexan 3 yl)benzene c) 1 bromo 2 chloro 4 ethylbenzene d) ( S ) 2 (6 methoxynaphthalen 2 yl)propanoic acid e) 3,5 dichloroanisole 2. The molecular formula for Tylenol is C 8 H 9 NO 2 . Calculate the number of unsaturations. (8 – 4.5) + 0.5 + 1 = 5 unsaturations 3. There are 2 possible formulas, C 9 H 16 and C 8 H 12 O, for the molecular ion at m/z = 124. Calculate the exact mass for each compound (to 4 decimals). In addition to the difference in their exact masses, how else could the compounds be differentiated on the mass spectrum? C 9 H 16 = 124.1253 C 8 H 12 O = 124.0889 The differences in the M+1 and M+2 abundances would correspond to the presence or absence of isotopes of oxygen. 4. The base peak in the mass spectrum of 2,2,5,5 tetramethylhexane (mass = 142) is at
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CHM_256_Worksheet_1_crib - CHM256 Spring2014 Worksheet1 1....

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