Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Chapter 21, Problem 43E
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1. Calculate the accurate monoisotopic mass (using all 1H, 12C, 14N, 160 and 35CI) for your product using the table in
your lab manual. Don't include the Cl, since you should only have [M+H]*. Compare this to the value you see on
the LC-MS printout. How much different are they?
2. There are four isotopic peaks for the [M+H]* ion at m/z 240, 241, 242 and 243. For one point of extra credit,
explain what each of these is and why they are present.
3. There is a fragment ion at m/z 184. For one point of extra credit, identify this fragment and confirm by
calculating the accurate monoisotopic mass.
4. The UV spectrum is also at the bottom of your printout. For one point of extra credit, look up the UV spectrum
of bupropion on Google Images and compare to your spectrum. Do they match? Cite your source.
5. For most of you, there will be a second chromatographic peak whose m/z is 74 (to a round number). For one
point of extra credit, see if you can identify this molecule as well and confirm by…
Please draw, not just describe!
can you draw each step on a piece of a paper please this is very confusing to me
Chapter 21 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 21 - Write the following isotopes in hyphenated form...Ch. 21 - Write the following isotopes in nuclide notation...Ch. 21 - For the following isotopes that have missing...Ch. 21 - For each of the isotopes in Exercise 21.1,...Ch. 21 - Write the nuclide notation, including charge if...Ch. 21 - Calculate the density of the M1224g nucleus in...Ch. 21 - What are the two principal differences between...Ch. 21 - The mass of the atom N1123a is 22.9893 arm.. (a)...Ch. 21 - Which of the following nuclei lie within the band...Ch. 21 - Which of the following nuclei lie within the band...
Ch. 21 - Write a brief description or definition of each of...Ch. 21 - Which of the various particles ( particles, ...Ch. 21 - Complete each of the following equations by adding...Ch. 21 - Complete each 0f the following equations: (a)...Ch. 21 - Write a balanced equation for each of the...Ch. 21 - Technetium-99 is prepared from 98Mo. Molybdenum-SS...Ch. 21 - The mass of the atom F919 is 18.99840 amu.. (a)...Ch. 21 - For the reaction C614N714+?, if 100.0 g of carbon...Ch. 21 - What are the types of radiation emitted by the...Ch. 21 - That changes occur to the atomic number and mass...Ch. 21 - What is the change in the nucleus that results...Ch. 21 - Many nuclides with atomic numbers greater than 83...Ch. 21 - Why is electron capture accompanied by the...Ch. 21 - Explain, in terms of Figure 21.2, how unstable...Ch. 21 - Which of the following nuclei is most likely to...Ch. 21 - The following nuclei do not lie in the band of...Ch. 21 - The following nuclei do not lie in the band of...Ch. 21 - Predict by what mode(s) of spontaneous radioactive...Ch. 21 - Write a nuclear reaction for each step in the...Ch. 21 - Write a nuclear reaction for each step in the...Ch. 21 - Define the term half-life and illustrate it with...Ch. 21 - A 1.00106 -g sample of nobelium, N102254o, has a...Ch. 21 - 239Pu is a nuclear waste byproduct with a...Ch. 21 - The isotope 208Tl undergoes decay with a...Ch. 21 - If 1.000 g of R88226a produces 0.0001 mL of the...Ch. 21 - The isotope S3890r one of the extremely hazardous...Ch. 21 - Technetium-99 is often used for assessing heart,...Ch. 21 - What is the age of mummified primate skin that...Ch. 21 - A sample of rock was found to contain 8.23 mg of...Ch. 21 - A laboratory investigation shows that a sample of...Ch. 21 - Plutonium was detected in trace amounts in natural...Ch. 21 - A B47e atom (mass = 7.0169 amu) decays into a L37i...Ch. 21 - A B58 atom (mass = 8.0246 amu) decays into B48...Ch. 21 - Isotopes such as 26Al (half-life: 7.2105 years)...Ch. 21 - Write a balanced equation for each of the...Ch. 21 - Write a balanced equation for each of the...Ch. 21 - Write the balanced nuclear equation for the...Ch. 21 - How does nuclear fission differ from nuclear...Ch. 21 - Both fusion and fission are nuclear reactions. Why...Ch. 21 - Cite the conditions necessary for a nuclear chain...Ch. 21 - Describe the components of a nuclear reactor.Ch. 21 - In usual practice, both a moderator and control...Ch. 21 - Describe how the potential energy of uranium is...Ch. 21 - The mass of a hydrogen atom (11H) is 1.007825 arm;...Ch. 21 - How can a radioactive nuclide be used to show that...Ch. 21 - Technetium-99m has a half-life of 6.01 hours. If a...Ch. 21 - Iodine that enters the body is stored in the...Ch. 21 - If a hospital were storing radioisotopes, what is...Ch. 21 - Based on what is known about Radon-222’s primary...Ch. 21 - Given specimens uranium-232 (t1/2=68.9y) and...Ch. 21 - A scientist is studying a 2.234 g sample of...Ch. 21 - Given specimens neon-24 (t1/2=3.38min) and...
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- > Can the molecule on the right-hand side of this organic reaction be made in good yield from no more than two reactants, in one step, by moderately heating the reactants? esc ? A O O •If your answer is yes, then draw the reactant or reactants in the drawing area below. You can draw the reactants in any arrangement you like. • If your answer is no, check the box under the drawing area instead. olo 18 Ar Explanation Check BB Click and drag to start drawing a structure. 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibilityarrow_forwardName the structurearrow_forward> For each pair of substrates below, choose the one that will react faster in a substitution reaction, assuming that: 1. the rate of substitution doesn't depend on nucleophile concentration and 2. the products are a roughly 50/50 mixture of enantiomers. Substrate A Substrate B Faster Rate X CI (Choose one) (Choose one) CI Br Explanation Check Br (Choose one) C 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy A F10arrow_forward
- How to draw this mechanism for the foloowing reaction in the foto. thank youarrow_forwardPredict the major products of the following organic reaction: Some important notes: CN A? • Draw the major product, or products, of the reaction in the drawing area below. • If there aren't any products, because no reaction will take place, check the box below the drawing area instead. • Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers. No reaction. Explanation Check Click and drag to start drawing a structure. 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Centerarrow_forwardDraw the major product of the following reaction. Do not draw inorganic byproducts. H3PO4 OHarrow_forward
- Predict the major products of this organic reaction: HBr (1 equiv) Δ ? Some important notes: • Draw the major product, or products, of this reaction in the drawing area below. • You can draw the products in any arrangement you like. • Pay careful attention to the reaction conditions, and only include the major products. • Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers. • Note that there is only 1 equivalent of HBr reactant, so you need not consider the case of multiple additions. Explanation Check X ©2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacyarrow_forwardFor the structure below, draw the resonance structure that is indicated by the curved arrow(s). Be sure to include formal charges. :ÖH Modify the second structure given to draw the new resonance structure. Include lone pairs and charges in your structure. Use the + and - tools to add/remove charges to an atom, and use the single bond tool to add/remove double bonds.arrow_forwardUsing the table of Reactants and Products provided in the Hints section, provide the major product (with the correct stereochemistry when applicable) for questions below by selecting the letter that corresponds to the exact chemical structures for the possible product. OH conc Hydrochloric acid 40°C Temp A/arrow_forward
- Using arrows to designate the flow of electrons, complete the reaction below and provide a detailed mechanism for the formation of the product OH conc Hydrochloric acid 40°C Temp All chemical structures should be hand drawn on a piece of paper Paragraph BI UAE +varrow_forwarddraw out the following structures plesearrow_forwardDraw everything on a piece of paper outlining the synthesis from acetaldehyde to 2 cyclopentene carboxaldehyde using carbon based reagants with 3 carbons or fewers. Here is the attached image.arrow_forward
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