homework_HWK2 - burns with a green flame m/z rel intensity...

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1 CHEM 520 Analytical Mass Spectrometry Homework 2 Due February 16, 2010 Use the given mass spectra, isotope abundances, and accurate mass measurements to assign ion compositions, identify molecular ions, and attempt to interpret the spectra to list plausible structure candidates. The accurate masses are within 0.0005 of theoretical values. Unknown 1: Yellow solid, m.p. 79 °C, insoluble in water, soluble in ethanol and organic solvents. m/z rel. intensity accurate mass ___________________________________________________ 175 0.4 174 10.5 173 91.0 173.0479 128 11.1 127 100 127.0546 116 2.7 115 27.0 115.0550 46 0.6 45.9928 ___________________________________________________
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2 Unknown 2: Volatile liquid, b.p. 68 °C, immiscible with water,
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Unformatted text preview: burns with a green flame. m/z rel. intensity accurate mass ___________________________________________________________________ 106 0.2 105 1.1 104 32.4 104.0644 103 11.1 103.0681 and 103.0566 (resolved doublet) 89 6.3 88 1.5 73 100 73.0460 72 39.5 72.0497 and 72.0382 (resolved doublet) ____________________________________________________________________ 3 Unknown 3: A colorless liquid, b.p. 149 °C. m/z rel. intensity accurate mass ___________________________________________________________________ 166 4.3 165 5.2 164 100 163 4.9 162 96.0 85 2.8 84 3.3 83 64.0 82.9955 89 6.3 45 25.5 44.9799 ____________________________________________________________________...
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This note was uploaded on 03/04/2010 for the course CHEM chem 520 taught by Professor Turecek during the Winter '10 term at University of Washington.

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homework_HWK2 - burns with a green flame m/z rel intensity...

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