100 100 [1] [2] molecular ion m/z = 70 50 - molecular ion 50- m/z = 68 10 20 30 40 60 70 80 90 100 10 20 40 70 80 90 100 mlz m/z Relative abundance 8- 8- Relative abundance 3-

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Q: which significant information can be provide by the mass spectra? I. identity of the compounds II.…

A: What significant information can be provided by mass spectra?

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Q: Draw the structure of the compound next to its matching spectrum. Mark peaks on the spectra.

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Q: 4.0 H₂C I 3.0 11 H₂ CH3 I CH CH3 III IV 2.0 ppm 1.0

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A: The Infrared spectra tell important  infomation about functional group  in the molecule  .

Q: CH3CH₂CH₂Br

A: Can be represented visually in the form of a graph; abundance versus mass-to-charge ratio (m/z).

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.