IR Spectrum of the Grignard Product 100 98 96 - 94 - 3001.1 1583.4 2558.7 92- 3070.7 2672.3 934.2 1423.7 90- 2826.3 1453.3 1601.6 88 - IR Spectrum 86- 84 1291.6 1325.3 82 80 - 78- 1682.9 4000 3500 3000 2500 2000 1500 1000 Wavenumbers (cm-1) %Transmittance

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Q: 100- 90- 80- -70- 60- 50- 40- 30- 20- 10- Unknown #1 4800 3000 2000 1500 1000 500 Wavenumber (cm-)

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Q: 4. Which of the m/z values correspond to the molecular ion peak in the following mass spectrum?

A: