Chemistry: A Molecular Approach, Books a la Carte Edition (4th Edition)
4th Edition
ISBN: 9780134113593
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 7, Problem 114DIA
(a)
Interpretation Introduction
To determine: The absorbed energy.
(b)
Interpretation Introduction
To determine: The absorbed energy.
(c)
Interpretation Introduction
To compare: Which molecule absorbs more energy for maximum absorbance.
(d)
Interpretation Introduction
To explain: Reason for common use of TDSA and 2-EHMC in sunscreen products.
(e)
Interpretation Introduction
To determine: The absorbed energy.
(f)
Interpretation Introduction
To determine: The number of molecules of TDSA and 2-EHMC on the skin.
(g)
Interpretation Introduction
To determine: The mass of TDSA and 2-EHMC on skin.
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Part II. Given two isomers: 2-methylpentane (A) and 2,2-dimethyl butane (B) answer the following:
(a) match structures of isomers given their mass spectra below (spectra A and spectra B)
(b) Draw the fragments given the following prominent peaks from
each spectrum:
Spectra A m/2 =43 and 1/2-57
spectra B m/2 = 43
(c) why is 1/2=57 peak in spectrum A more intense compared
to the same peak in spectrum B.
Relative abundance
Relative abundance
100
A
50
29
29
0
10
-0
-0
100
B
50
720
30
41
43
57
71
4-0
40
50
60 70
m/z
43
57
8-0
m/z = 86
M
90 100
71
m/z = 86
M
-O
0
10 20 30
40 50
60
70
80
-88
m/z
90
100
Part IV. C6H5 CH2CH2OH is an aromatic compound which was subjected to Electron Ionization - mass
spectrometry (El-MS) analysis. Prominent m/2 values: m/2 = 104 and m/2 = 9) was obtained.
Draw the structures of these fragments.
For each reaction shown below follow the curved arrows to complete each equationby showing the structure of the products. Identify the acid, the base, the conjugated acid andconjugated base. Consutl the pKa table and choose the direciton theequilibrium goes. However show the curved arrows. Please explain if possible.
Chapter 7 Solutions
Chemistry: A Molecular Approach, Books a la Carte Edition (4th Edition)
Ch. 7 - Which wavelength of light has the highest...Ch. 7 - Q2. Which kind of electromagnetic radiation...Ch. 7 - Q3. How much energy (in J) is contained in 1.00...Ch. 7 - Q4. Light from three different lasers (A, B, and...Ch. 7 - Prob. 5SAQCh. 7 - Prob. 6SAQCh. 7 - Prob. 7SAQCh. 7 - Prob. 8SAQCh. 7 - Prob. 9SAQCh. 7 - Prob. 10SAQ
Ch. 7 - 1. Why is the quantum mechanical model of the atom...Ch. 7 - Prob. 2ECh. 7 - 3. Define the wavelength and amplitude of a wave....Ch. 7 - 4. Define the frequency of electromagnetic...Ch. 7 - 5. What determines the color of light? Describe...Ch. 7 - Prob. 6ECh. 7 - Prob. 7ECh. 7 - Prob. 8ECh. 7 - Prob. 9ECh. 7 - 10. Describe the photoelectric effect. How did...Ch. 7 - Prob. 11ECh. 7 - 12. What is a photon? How is the energy of a...Ch. 7 - Prob. 13ECh. 7 - Prob. 14ECh. 7 - Prob. 15ECh. 7 - Prob. 16ECh. 7 - 17. What are complementary properties? How does...Ch. 7 - Prob. 18ECh. 7 - 19. What is a trajectory? What kind of information...Ch. 7 - Prob. 20ECh. 7 - 21. Newton’s laws of motion are deterministic....Ch. 7 - Prob. 22ECh. 7 - 23. What is a probability distribution map?
Ch. 7 - 24. For each solution to the Schrödinger equation,...Ch. 7 - Prob. 25ECh. 7 - 26. What is the Schrödinger equation? What is a...Ch. 7 - 27. What are the possible values of the principal...Ch. 7 - 28. What are the possible values of the angular...Ch. 7 - 29. What are the possible values of the magnetic...Ch. 7 - 30. List all the orbitals in each principal level....Ch. 7 - 31. Explain the difference between a plot showing...Ch. 7 - 32. Make sketches of the general shapes of the s,...Ch. 7 - Prob. 33ECh. 7 - 34. Why are atoms usually portrayed as spheres...Ch. 7 - 35. The distance from the sun to Earth is km. How...Ch. 7 - Prob. 36ECh. 7 - 37. List these types of electromagnetic radiation...Ch. 7 - 38. List these types of electromagnetic radiation...Ch. 7 - 39. Calculate the frequency of each wavelength of...Ch. 7 - Prob. 40ECh. 7 - 41. Calculate the energy of a photon of...Ch. 7 - 42. Calculate the energy of a photon of...Ch. 7 - 43. A laser pulse with wavelength 532 nm contains...Ch. 7 - Prob. 44ECh. 7 - 45. Determine the energy of 1 mol of photons for...Ch. 7 - 46. How much energy is contained in 1 mol of...Ch. 7 - Prob. 47ECh. 7 - Prob. 48ECh. 7 - Prob. 49ECh. 7 - 50. The smallest atoms can themselves exhibit...Ch. 7 - 51. What is the de Broglie wavelength of an...Ch. 7 - 52. A proton in a linear accelerator has a de...Ch. 7 - 53. Calculate the de Broglie wavelength of a 143-g...Ch. 7 - 54. A 0.22-caliber handgun fires a 1.9-g bullet at...Ch. 7 - 55. An electron has an uncertainty in its position...Ch. 7 - 56. An electron traveling at 3.7 × 105 m/s has an...Ch. 7 - 57. Which electron is, on average, closer to the...Ch. 7 - Prob. 58ECh. 7 - 59. What are the possible values of l for each...Ch. 7 - Prob. 60ECh. 7 - 61. Which set of quantum numbers cannot specify an...Ch. 7 - 62. Which combinations of n and l represent real...Ch. 7 - 63. Sketch the 1s and 2p orbitals. How do the 2s...Ch. 7 - Prob. 64ECh. 7 - 65. An electron in a hydrogen atom is excited with...Ch. 7 - 66. Determine whether each transition in the...Ch. 7 - 67. According to the quantum-mechanical model for...Ch. 7 - 68. According to the quantum-mechanical model for...Ch. 7 - 69. Calculate the wavelength of the light emitted...Ch. 7 - 70. Calculate the frequency of the light emitted...Ch. 7 - 71. An electron in the n = 7 level of the hydrogen...Ch. 7 - Prob. 72ECh. 7 - 73. Ultraviolet radiation and radiation of shorter...Ch. 7 - Prob. 74ECh. 7 - Prob. 75ECh. 7 - 76. A green leaf has a surface area of 2.50 cm2....Ch. 7 - 77. In a technique used for surface analysis...Ch. 7 - Prob. 78ECh. 7 - Prob. 79ECh. 7 - 80. The energy required to ionize sodium is 496...Ch. 7 - Prob. 81ECh. 7 - 82. Suppose that, in an alternate universe, the...Ch. 7 - Prob. 83ECh. 7 - Prob. 84ECh. 7 - 85. The binding energy of electrons in a metal is...Ch. 7 - 86. In order for a thermonuclear fusion reaction...Ch. 7 - Prob. 87ECh. 7 - 88. The distance from Earth to the sun is 1.5 ×...Ch. 7 - 89. The iodine molecule can be photodissociated...Ch. 7 - 90. A 5.00-mL ampule of a 0.100-M solution of...Ch. 7 - 91. A laser produces 20.0 mW of red light. In 1.00...Ch. 7 - Prob. 92ECh. 7 - 93. The quantum yield of light-induced chemical...Ch. 7 - Prob. 94ECh. 7 - Prob. 95ECh. 7 - Prob. 96ECh. 7 - Prob. 97ECh. 7 - Prob. 98ECh. 7 - 99. Find the velocity of an electron emitted by a...Ch. 7 - 100. Water is exposed to infrared radiation of...Ch. 7 - 101. The 2005 Nobel Prize in Physics was given, in...Ch. 7 - 102. A metal with a threshold frequency of 6.71 ×...Ch. 7 - Prob. 103ECh. 7 - Prob. 104ECh. 7 - 105. Explain the difference between the Bohr model...Ch. 7 - 106. The light emitted from one of the following...Ch. 7 - Prob. 107ECh. 7 - Prob. 108ECh. 7 - 109. Discuss the nature of light with your group....Ch. 7 - Prob. 110QGWCh. 7 - Prob. 111QGWCh. 7 - Prob. 112QGWCh. 7 - Prob. 113QGWCh. 7 - 114. On average sunlight shines on the surface of...
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