Introduction to Chemistry, Special Edition
6th Edition
ISBN: 9781337035934
Author: Cracolice/Peters
Publisher: Cengage Learning
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Chapter 5, Problem 59E
Interpretation Introduction
Interpretation:
The suggestion about mass, particle charge and a minimum number of positive particles from different elements which are obtained by
Concept introduction:
Thomson proposed that electrons are embedded in a positively charged sphere. The electrons are negatively charged subatomic particles which are a present atom of different elements. When an atom loses come electrons, it becomes a positively charged particle.
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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
Introduction to Chemistry, Special Edition
Ch. 5 - Prob. 1ECh. 5 - List the major points in Daltons atomic theory.Ch. 5 - Show that the Daltons atomic theory explains the...Ch. 5 - How does Daltons atomic theory account for the Law...Ch. 5 - The chemical name for limestone, a compound of...Ch. 5 - The brilliance with which magnesium burns makes it...Ch. 5 - Sulfur and fluorine form at least two compounds...Ch. 5 - Prob. 8ECh. 5 - Advances in technology and science often progress...Ch. 5 - When J. J. Thomson measured the deflection of a...
Ch. 5 - Prob. 11ECh. 5 - What is meant by stating that the charge of an...Ch. 5 - How can we account for the fact that, in the...Ch. 5 - How can we account for the fact that most of the...Ch. 5 - What do we call the central part of an atom?Ch. 5 - What major conclusions were drawn from the...Ch. 5 - Describe the activity of electrons according to...Ch. 5 - The Rutherford experiment was performed and its...Ch. 5 - Compare the three major parts of an atom in charge...Ch. 5 - Prob. 20ECh. 5 - Can two different elements have the same atomic...Ch. 5 - Compare the number of protons and electrons in an...Ch. 5 - Explain why isotopes of different elements can...Ch. 5 - How many protons, neutrons and electrons are there...Ch. 5 - Prob. 25ECh. 5 - What advantage does the atomic mass unit have over...Ch. 5 - What is an atomic mass unit?Ch. 5 - The mass of an average atom of a certain element...Ch. 5 - The average mass of boron atoms is 10.81u. How...Ch. 5 - The atomic masses of the natural isotopes of neon...Ch. 5 - A certain element consists of two stable isotopes....Ch. 5 - The mass of 60.4 of the atoms of an element is...Ch. 5 - Isotopic data for boron allow the calculation of...Ch. 5 - Questions 31 through 36: Percentage abundances and...Ch. 5 - Questions 31 through 36: Percentage abundances and...Ch. 5 - Questions 31 through 36: Percentage abundances and...Ch. 5 - Questions 31 through 36: Percentage abundances and...Ch. 5 - Questions 31 through 36: Percentage abundances and...Ch. 5 - Prob. 40ECh. 5 - How many elements are in Period 5 of the periodic...Ch. 5 - Write the symbol of the element in each given...Ch. 5 - Prob. 43ECh. 5 - List the symbols of the elements of each of the...Ch. 5 - Using only a periodic table for reference, list...Ch. 5 - Prob. 46ECh. 5 - Write the atomic masses of helium and aluminum.Ch. 5 - Prob. 48ECh. 5 - Prob. 49ECh. 5 - Prob. 50ECh. 5 - Prob. 51ECh. 5 - Determine whether each statement that follows is...Ch. 5 - Prob. 53ECh. 5 - Sodium oxide and sodium peroxide are two compounds...Ch. 5 - Prob. 55ECh. 5 - The CRC Handbook, a large reference book of...Ch. 5 - The element lanthanum has two stable isotopes,...Ch. 5 - The atomic mass of lithium on a periodic table is...Ch. 5 - Prob. 59ECh. 5 - Prob. 60ECh. 5 - Prob. 61ECh. 5 - Prob. 62ECh. 5 - Prob. 5.1TCCh. 5 - Prob. 5.2TCCh. 5 - Prob. 5.3TCCh. 5 - Prob. 5.4TCCh. 5 - Prob. 5.5TCCh. 5 - Write a brief description of the relationships...Ch. 5 - Prob. 2CLECh. 5 - Prob. 3CLECh. 5 - Prob. 4CLECh. 5 - Prob. 5CLECh. 5 - Prob. 6CLECh. 5 - Prob. 7CLECh. 5 - What is the number of each type of subatomic...Ch. 5 - Naturally occurring lithium is composed of two...Ch. 5 - Prob. 3PECh. 5 - Prob. 4PECh. 5 - Prob. 5PE
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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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