
General, Organic, and Biological Chemistry (3rd Edition)
3rd Edition
ISBN: 9780134042428
Author: Laura D. Frost, S. Todd Deal
Publisher: PEARSON
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Chapter 2, Problem 1IA.1Q
Summary Introduction
To determine:
The number of protons present in calcium-42 and calcium-40.
Introduction:
Proton is defined as the subatomic particle which is a positively charged species present in the nucleus of an atom. The atoms having same number of protons but different number of neutrons are known as isotopes.
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Decide whether these proposed Lewis structures are reasonable.
proposed Lewis structure
Is the proposed Lewis structure reasonable?
Yes.
:0:
Cl C C1:
0=0:
: 0 :
: 0 :
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No, it has the wrong number of valence electrons.
The correct number is: ☐
No, it has the right number of valence electrons but doesn't satisfy the
octet rule.
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No, it has the right number of valence electrons but doesn't satisfy the
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The symbols of the problem atoms are:*
Yes.
☐
No, it has the wrong number of valence electrons.
The correct number is: ☐
No, it has the right number of valence electrons but doesn't satisfy the
octet rule.
The symbols of the problem atoms are:* |
* If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many
times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0".
Draw the Lewis structure for the polyatomic trisulfide
anion. Be sure to include all resonance structures that satisfy the octet rule.
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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…
Chapter 2 Solutions
General, Organic, and Biological Chemistry (3rd Edition)
Ch. 2 - Where are the subatomic particles located in an...Ch. 2 - Prob. 2.2PPCh. 2 - Prob. 2.3PPCh. 2 - Prob. 2.4PPCh. 2 - How can you determine the following? a. the number...Ch. 2 - What can be determined from the following? a. the...Ch. 2 - Provide the name and atomic symbol of the element...Ch. 2 - Provide the name and atomic symbol of the element...Ch. 2 - Prob. 2.9PPCh. 2 - Prob. 2.10PP
Ch. 2 - Determine the number of protons, neutrons, and...Ch. 2 - Determine the number of protons, neutrons, and...Ch. 2 - Prob. 2.13PPCh. 2 - Prob. 2.14PPCh. 2 - Prob. 2.15PPCh. 2 - Prob. 2.16PPCh. 2 - Prob. 2.17PPCh. 2 - How are atomic mass and mass number similar? How...Ch. 2 - There are three naturally occurring isotopes of...Ch. 2 - Prob. 2.20PPCh. 2 - Prob. 2.21PPCh. 2 - Prob. 2.22PPCh. 2 - Prob. 2.23PPCh. 2 - Prob. 2.24PPCh. 2 - Prob. 2.25PPCh. 2 - Prob. 2.26PPCh. 2 - Prob. 2.27PPCh. 2 - Prob. 2.28PPCh. 2 - Prob. 2.29PPCh. 2 - Prob. 2.30PPCh. 2 - Prob. 2.31PPCh. 2 - Prob. 2.32PPCh. 2 - What does the unit sievert measure?Ch. 2 - Prob. 2.34PPCh. 2 - Prob. 2.35PPCh. 2 - Prob. 2.36PPCh. 2 - Prob. 2.37PPCh. 2 - Prob. 2.38PPCh. 2 - Prob. 2.39PPCh. 2 - Prob. 2.40PPCh. 2 - Prob. 2.41PPCh. 2 - Prob. 2.42PPCh. 2 - Prob. 2.43PPCh. 2 - Prob. 2.44PPCh. 2 - Complete the following statements: a. A...Ch. 2 - Complete the following statements: a. The mass...Ch. 2 - Prob. 2.47APCh. 2 - Prob. 2.48APCh. 2 - Prob. 2.49APCh. 2 - Prob. 2.50APCh. 2 - Prob. 2.51APCh. 2 - Prob. 2.52APCh. 2 - Prob. 2.53APCh. 2 - Prob. 2.54APCh. 2 - Prob. 2.55APCh. 2 - Prob. 2.56APCh. 2 - Prob. 2.57APCh. 2 - Prob. 2.58APCh. 2 - Prob. 2.59APCh. 2 - Prob. 2.60APCh. 2 - Prob. 2.61APCh. 2 - Prob. 2.62APCh. 2 - Prob. 2.63APCh. 2 - Prob. 2.64APCh. 2 - Prob. 2.65APCh. 2 - Prob. 2.66APCh. 2 - Prob. 2.67APCh. 2 - Prob. 2.68APCh. 2 - A 25-mL sample of chromium-51 contains 1.00 mCi....Ch. 2 - Prob. 2.70APCh. 2 - Prob. 2.71APCh. 2 - Prob. 2.72APCh. 2 - Prob. 2.73APCh. 2 - Prob. 2.74APCh. 2 - Prob. 2.75APCh. 2 - Prob. 2.76APCh. 2 - Prob. 2.77CPCh. 2 - Prob. 2.78CPCh. 2 - PET scans are useful for imaging areas of high...Ch. 2 - Prob. 1IA.1QCh. 2 - Prob. 1IA.2QCh. 2 - Prob. 1IA.3QCh. 2 - Prob. 1IA.4QCh. 2 - Prob. 1IA.5QCh. 2 - Prob. 1IA.6QCh. 2 - Prob. 1IA.7QCh. 2 - Prob. 1IA.8QCh. 2 - Prob. 1IA.9QCh. 2 - Prob. 1IA.10QCh. 2 - Prob. 1IA.11QCh. 2 - Prob. 2IA.1QCh. 2 - Prob. 2IA.2QCh. 2 - Prob. 2IA.3QCh. 2 - Prob. 2IA.4QCh. 2 - Prob. 1ICCh. 2 - Prob. 2IC
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