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Remember: Moral Ascendancy Place it along with your signature in the first and last page of your Solutions Sheet "The answers are of my own work and will not be shared with fellow CHEM206 students nor to others outside CHEM206 class". 1. [5 points] Which molecular formula has an exact molecular mass of 86.1096 amu: C6H14, CAH10N2, or C4H602? 2. [5 points] Sketch the mass spectrum of 1-chloropropane. 3. [5 points] Which of the following mass spectra is for 2-methoxybutane. Substantiate your answer by showing the fragments. 100 100 73 59 100 45 80 80 80 60 60 60 Relative abundance Relative abundance Relative abundance 40 40 40 20 20 73 20 OF 10 20 40 50 60 70 80 90 100 10 30 4 50 60 70 80 90 100 20 30 40 50 60 70 80 90 miz n/z miz A B C100 42 base ion peak 80 [C3H6]* CH3- CH2-CH2- CI C3H7CI I M, = 78.5 60 Relative Intensity [C2H5]* 29 3 : 1 ratio 40 [CH3] 27 [CH3CH2CH235cl]+ [C3H=]* 3 : 1 ratio [CH3CH2CH, 37cu]+ 41 [CH3CH2CH2]* molecular 20 [CH,35cl]* [CH2CH,35cl]* ion 28 [C3H3] 39 43 [M]+ [C,H,]+ [CH, 37cl]+ [CH2CH,37cu]+ peaks 49- m/z 26 40 63 51 65 78 80 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80