Answer the following questions. 116.0 117.0 117.5 118.0 128.0 130.0 153.0 154.0 155.0 156.0 2.2 4.0 1.3 2.3 1.8 1.8 7.0 12.3 7.4 100- 12.0 5.3 157.0 158.0 4.9 159.0 233.0 19.7 234.0 235.0 236.0 237.0 238.0 312.0 313.0 1.6 1.8 38.8 2.7 18.8 1.3 20 - 34.8 2.4 314.0 100.0 315.0 316.0 6.8 98.3 50 100 150 200 250 300 317.0 6.3 318.0 31.9 319.0 m/z 2.1 a. Given the intensities of the peaks at m/z-312 and m/z=313, determine the number of carbon atoms in the compound. Show your work. Relative Intensity

Q: Mass spectrometery problem: what is the structure of the 120 m/z fragment of aspirin?

A: The molecular mass of Aspirin is 180 The fragmentations are as follow Loss of the acetyl group:…

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A:

Q: Select all the compounds that exhibits a proton spectrum with only one signal.

A:

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Q: Question is attached here

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A: The mass spectrum given for a hydrocarbon has following fragmentation peaks: m/z: 72, 57, 43, 29

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A: Mass spectrometry is used for differentiate compound based on their mass to charge ratio.

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A: The more the conjugated the system, the more will be the wavelength of that compound.

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

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A: Peaks at m/z 118 is M+ while that at m/z 120 is for [M+2]+ The ratio of intensity of M+ and [M+2]+…

Q: What peaks in their mass spectra can be used to distinguish between the following compounds?

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Q: 2. In each molecule, label the protons a, b, c, etc. in order of increasing frequency. Protons…

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A: (a)

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Q: CH3 CH3 11 10 .105

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A: The correct answer about C-13 NMR spectrum is given below

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A:

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Q: Question attached

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Q: examine two mass spectra, and see that both of them have the same molecular weight, their…

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A: I'm allowed to answer 1st only

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Q: Draw the structures of the fragments that are produced from mass spectra of: Alcohol, amine,…

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Q: 2. For each of the following compounds: a) Consider which protons are magnetically equivalent and…

A: Diastereotopic protons are not chemically equivalent and hence, give two different signals.

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A: IR and mass spectra of an organic molecule whose structure is to be deduced.

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.