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:

Q: c. The following figure shows the mass spectrum of a hydrocarbon. i. Propose a molecular formula for…

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

Q: How can the following compounds be distinguished using their mass spectra? CH3 H3C ČH3 H3C. CH3 H3C…

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.

Q: A mass spec of a compound gave M+ peak at 118 of 57.7% of the base peak. It also had a peak at 120…

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: Can you use IR spectroscopy to differentiate between ketones and aldehydes?

A: The general formula of an aldehyde is R-CHO or R-C(=O)-H The general formula of a ketone is RCOR' or…

Q: a) which bonds are present in carboxylic acids but not alkanes? b) identify which signals belong to…

A: Answer - IR spectra of 3- methylbutanoic  acid - 1)  Answer -The carboxylic acid has both O-H bond…

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

A: The greater the chemical shift, higher will be its frequency ( downfield proton)  and lesser the…

Q: Given the parent compound, draw the mass spectrum fragment that is observed at m/z 71. Include any…

A: Ans:Mass spectrum is the graph of the molecule in which mass to charge ratio is plotted on x axis…

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A: The organic compound in vapor form when subjected to electron impact produces radical ion (M+.)…

Q: incorrect statement regarding mass spectrum?

A: Ans. Mass spectrum show the relative abundance of each cation detected: This statement is incorrect.…

Q: How could you distinguish the mass spectrum of 2,2-dimethylpropane from those of pentane and…

A: Given  distinguish the mass spectrum of 2,2-dimethylpropane Vs pentane and 2-methylbutane

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A: (a)

Q: 3. Which of the following information is primarily obtained from infrared spectroscopy? A)…

A: We have to predict the information that we get from IR spectroscopy.

Q: CH3 (b) CH3-CH-CH2-C-OH CH3 (с) CH3

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

Q: Summarize, why there be 2x the amount(moles) of benzaldehyde and same for NaOH vs. acetone?

A:

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

A: According to the question, two mass spectra have the same molecular weight, but their fragmentation…

Q: b) Can these two molecules shown below be distinguished by mass spectrometry? Give reasons for your…

A: Fragmentation of ketones are as follows: 1. By bombarding a volatile organic molecule with…

Q: Nuclear Magnetic Resonance 1. Compound 1 is a liquid at room temperature (bp-130°C) Elemental…

A: IR spectroscopy is used to determine the functional groups present in the sample. Mass spectrometry…

Q: Analyze the provided spectral data. Does the provided data support the preparation of the desired…

A: I'm allowed to answer 1st only

Q: How can you distinguish aldehydes, esters and carboxylic acids using IR spectra? Explain using…

A: IR (infrared) spectroscopy used for functional group identification. IR frequency range is from…

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A: Mass spectrum is a plot of mass to charge ratio of the compound versus intensity. The mass to charge…

Q: Assign each mass spectrum to the molecule on the list. Write down the molecule that corresponds to…

A: A typical fragmentation of the molecular ion of a carbonyl compound having at least one gamma…

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

A: I. Alcohols Primary , secondary alcohols gives weak molecular ion peak while tertiary alcohol gives…

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.

Q: A)  Using the mass spectrum and the IR spectrum, identify any heteroatoms in the compound. Explain…

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.