Pearson eText -- Introductory Chemistry -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135214015
Author: Nivaldo Tro
Publisher: PEARSON+
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Chapter 5, Problem 7E
Explain the difference between a molecular formula and an empirical formula.
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Consider the "C NMR spectrum below.
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The spectrum belongs to which one of the following constitutional isomers of the compound C,H12? Select the single best answer.
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The structure of compound 1,3,5-trimethylbenzene (mesitylene) is given below.
How many signals would you expect to find in the 'H NMR spectrum of 1,3,5-trimethylbenzene (mesitylene)?
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1
How many signals do you expect in the 'H NMR spectrum for this molecule?
CI CI
Cl
Write the answer in the table below.
Also, in each of the drawing areas below is a copy of the molecule, with H atoms shown. In each copy, one of the H atoms is highlighted red. Highlight in red all
other H atoms that would contribute to the same signal as the H already highlighted red.
Note for advanced students: Remember, a multiplet is considered one signal in the 'H NMR spectrum.
1
Number of signals in the 'H NMR spectrum.
☐
For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same
signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
No additional H atoms to highlight in
top molecule
For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute to the
same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at…
Chapter 5 Solutions
Pearson eText -- Introductory Chemistry -- Instant Access (Pearson+)
Ch. 5 - Q1. Carbon tetrachloride has a chlorine - to-...Ch. 5 - Write a chemical formula for a compound that...Ch. 5 - Q3. How many oxygen atoms are in the chemical...Ch. 5 - Which element is a molecular element? a. Copper b....Ch. 5 - Q5. Which compound is ionic?
a.
b.
c.
d.
Ch. 5 - Write a formula for the compound that forms...Ch. 5 - Prob. 7SAQCh. 5 - Prob. 8SAQCh. 5 - Name the compound CrCl3 a. monochromium...Ch. 5 - Name the compound BaSO4 a. barium sulfate b....
Ch. 5 - Name the compound PF5. a. monophosphorus...Ch. 5 - Q12. What is the formula for manganese (III)...Ch. 5 - Q13. Name the acid (aq).
a. hydrogen phosphate
b....Ch. 5 - What is the formula for hydrobromic acid? a. HBr...Ch. 5 - Prob. 15SAQCh. 5 - 1. Do the properties of an element change when it...Ch. 5 - How might the world be different if elements did...Ch. 5 - What is the law of constant composition? Who...Ch. 5 - 4. What is a chemical formula? List some examples....Ch. 5 - 5. In a chemical formula, which element is listed...Ch. 5 - Prob. 6ECh. 5 - 7. Explain the difference between a molecular...Ch. 5 - What is a structural formula? What is the...Ch. 5 - What is the difference between a molecular element...Ch. 5 - Prob. 10ECh. 5 - What is the difference between a common name for a...Ch. 5 - List the metals that only one type of ion (that...Ch. 5 - Prob. 13ECh. 5 - Prob. 14ECh. 5 - Prob. 15ECh. 5 - Prob. 16ECh. 5 - Prob. 17ECh. 5 - Prob. 18ECh. 5 - What is the basic form for the named of molecular...Ch. 5 - How many atoms does each prefix specify? Mono-,...Ch. 5 - Prob. 21ECh. 5 - Prob. 22ECh. 5 - Prob. 23ECh. 5 - Prob. 24ECh. 5 - Two samples of sodium chloride are decomposed into...Ch. 5 - Two samples of carbon tetrachloride are decomposed...Ch. 5 - 27. Upon decomposition, one sample of magnesium...Ch. 5 - The mass ratio of sodium to fluorine in sodium...Ch. 5 - Use the law of constant composition to complete...Ch. 5 - Use the law of constant composition to complete...Ch. 5 - Prob. 31ECh. 5 - Prob. 32ECh. 5 - Prob. 33ECh. 5 - Prob. 34ECh. 5 - 35. How many oxygen atoms are in each chemical...Ch. 5 - 35. How many oxygen atoms are in each chemical...Ch. 5 - Determine the number of each type of atom in each...Ch. 5 - Determine the number of each type of atom in each...Ch. 5 - Prob. 39ECh. 5 - Complete the table. Formula Number of SO42units...Ch. 5 - 41. Give the empirical formula that corresponds to...Ch. 5 - 42. Give the empire formula that corresponds to...Ch. 5 - 43. Classify each element as atomic or...Ch. 5 - 44. Which elements have molecules as their basic...Ch. 5 - Classify each compound as ionic or molecular. a....Ch. 5 - Classify each compound as ionic or molecular. a....Ch. 5 - Match the substance on the left with the basic...Ch. 5 - Prob. 48ECh. 5 - What are the basic unitssingle atoms, molecules,...Ch. 5 - What are the basic unitssingle atoms molecules, or...Ch. 5 - 51. Classify each compound as ionic or molecular....Ch. 5 - 52. Classify each compound as ionic or molecular....Ch. 5 - 53. Write a formula for the ionic compound that...Ch. 5 - Write a formula for the ionic compound that forms...Ch. 5 - Prob. 55ECh. 5 - 56. Write a formula for the compound that forms...Ch. 5 - Prob. 57ECh. 5 - Prob. 58ECh. 5 - 59. Name each ionic compound. In each of these...Ch. 5 - 60 Name each ionic compound. In each of these...Ch. 5 - Prob. 61ECh. 5 - Prob. 62ECh. 5 - Determine whether the metal in each ionic compound...Ch. 5 - Prob. 64ECh. 5 - Prob. 65ECh. 5 - Prob. 66ECh. 5 - Prob. 67ECh. 5 - Prob. 68ECh. 5 - Prob. 69ECh. 5 - Prob. 70ECh. 5 - 71. Name each molecular compound.
a.
b.
c. NO
d....Ch. 5 - 72. Name each molecular compound.
a.
b.
C.
d....Ch. 5 - 73. Write a formula for each molecular compound...Ch. 5 - Write a formula for each molecular compound. a....Ch. 5 - Determine whether the name shown for each...Ch. 5 - Prob. 76ECh. 5 - Prob. 77ECh. 5 - Prob. 78ECh. 5 - Prob. 79ECh. 5 - 80. Name each acid (Hint: The names of the...Ch. 5 - 81. Write a formula for each acid.
a. phosphoric...Ch. 5 - Write a formula for each acid. a. hydrofluoric...Ch. 5 - 83. Calculate the formula mass for each...Ch. 5 - Calculate the formula mass for each compound. a....Ch. 5 - Prob. 85ECh. 5 - Prob. 86ECh. 5 - Prob. 87ECh. 5 - Prob. 88ECh. 5 - 89. How many chlorine atoms are in each set?
a....Ch. 5 - Prob. 90ECh. 5 - Prob. 91ECh. 5 - Prob. 92ECh. 5 - Prob. 93ECh. 5 - Prob. 94ECh. 5 - Prob. 95ECh. 5 - Prob. 96ECh. 5 - 97. For each compound, list the correct formula...Ch. 5 - For each compound, list the correct formula and...Ch. 5 - 99. Name each compound and calculate its formula...Ch. 5 - 100. Name each compound and calculate its formula...Ch. 5 - A compound contains only carbon and hydrogen and...Ch. 5 - Prob. 102ECh. 5 - 103. Carbon has two naturally occurring isotopes:...Ch. 5 - Nitrogen has two naturally occurring isotopes:...Ch. 5 - Prob. 105ECh. 5 - Molecules can be as small as two atoms or as large...Ch. 5 - Prob. 107ECh. 5 - Prob. 108QGWCh. 5 - Prob. 109QGWCh. 5 - Prob. 110QGWCh. 5 - Calculate the formula mass for each compound in...Ch. 5 - 112. Climate scientists have become increasingly...
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- wrtie the balanced equation and find the E° when the following half- reactions are combined Zn2+(aq) + 2e---> Zn(s) E°= -0.763V Ag+(aq) + e---> Ag (s) E°=+0.799Varrow_forwardConsider this molecule: How many H atoms are in this molecule? How many different signals could be found in its 'H NMR spectrum? Note: A multiplet is considered one signal. ☐arrow_forwardStudy this 'H NMR spectrum, and then answer the questions about it in the table below. Check 1.0- 0.5- 0.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 What unit symbol should be written on the horizontal axis? What is the chemical shift & of the doublet? If there is no doublet, just check the box instead. Give your answer to 2 significant digits. What is the chemical shift of the signal immediately upfield of the doublet? If there is no doublet, or no signal upfield of it, check the box instead. What is the chemical shift & of the least deshielded proton? If you can't tell without more information, check the box instead. 血 8 = ☐ There is no doublet. 8 = ☐ No such signal. 8 = 0 Need more information.arrow_forward
- how many moles of H2O2 are required to react with 11g of N2H4 according to the following reaction? (atomic weights: N=14.01, H=1.008, O= 16.00) 7H2O2 + N2H4 -> 2HNO3 + 8H20arrow_forwardcalculate the number of moles of H2 produced from 0.78 moles of Ga and 1.92 moles HCL? 2Ga+6HCL->2GaCl3+3H2arrow_forwardan adult human breathes 0.50L of air at 1 atm with each breath. If a 50L air tank at 200 atm is available, how man y breaths will the tank providearrow_forward
- Using reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NO2 (g) = N2O4(g) AGº = -5.4 kJ Now suppose a reaction vessel is filled with 4.53 atm of dinitrogen tetroxide (N2O4) at 279. °C. Answer the following questions about this system: Under these conditions, will the pressure of N2O4 tend to rise or fall? Is it possible to reverse this tendency by adding NO2? In other words, if you said the pressure of N2O4 will tend to rise, can that be changed to a tendency to fall by adding NO2? Similarly, if you said the pressure of N2O4 will tend to fall, can that be changed to a tendency to '2' rise by adding NO2? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO 2 needed to reverse it. Round your answer to 2 significant digits. 00 rise ☐ x10 fall yes no ☐ atm G Ar 1arrow_forwardWhy do we analyse salt?arrow_forwardCurved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. H H CH3OH, H+ H Select to Add Arrows H° 0:0 'H + Q HH ■ Select to Add Arrows CH3OH, H* H. H CH3OH, H+ HH ■ Select to Add Arrows i Please select a drawing or reagent from the question areaarrow_forward
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