Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 4, Problem 91E
The molecule
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Solid:
AT=Te-Ti
Trial 1
Trial 2
Trial 3
Average
ΔΗ
Mass water, g
24.096
23.976
23.975
Moles of solid, mol
0.01763
001767
0101781
Temp. change, °C
2.9°C
11700
2.0°C
Heat of reaction, J
-292.37J -170.473
-193.26J
AH, kJ/mole
16.58K 9.647 kJ 10.85 kr
16.58K59.64701
KJ
mol
12.35k
Minimum AS,
J/mol K
41.582
mol-k
Remember: q = mCsAT (m = mass of water, Cs=4.184J/g°C) & qsin =-qrxn &
Show your calculations for:
AH in J and then in kJ/mole for Trial 1:
qa (24.0969)(4.1845/g) (-2.9°C)=-292.37J
qsin =
qrxn =
292.35 292.37J
AH in J = 292.375 0.2923kJ
0.01763m01
=1.65×107
AH in kJ/mol =
=
16.58K
0.01763mol
mol
qrx
Minimum AS in J/mol K (Hint: use the average initial temperature of the three trials, con
Kelvin.)
AS=AHIT
(1.65×10(9.64×103) + (1.0
Jimai
For the compound: C8H17NO2
Use the following information to come up with a plausible structure:
8
This compound has "carboxylic acid amide" and ether functional groups.
The peaks at 1.2ppm are two signals that are overlapping one another.
One of the two signals is a doublet that represents 6 hydrogens; the
other signal is a quartet that represents 3 hydrogens.
Vnk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest bolling
point, choose 2 next to the substance with the next highest boiling point, and so on.
substance
C
D
chemical symbol,
chemical formula
or Lewis structure.
CH,-N-CH,
CH,
H
H 10: H
C-C-H
H H H
Cale
H 10:
H-C-C-N-CH,
Bri
CH,
boiling point
(C)
Сен
(C) B
(Choose
Chapter 4 Solutions
Chemistry Atoms First2e
Ch. 4 - Does a cation gain protons to form a positive...Ch. 4 - Iron(III) sulfate [Fe2( SO 4)3] is composed of...Ch. 4 - Which of the following atoms would be expected to...Ch. 4 - Which of the following atoms would be expected to...Ch. 4 - Predict the charge on the monatomic ions formed...Ch. 4 - Predict the charge on the monatomic ions formed...Ch. 4 - Write the electron configuration for each of the...Ch. 4 - Write the electron configuration for the monatomic...Ch. 4 - Write out the full electron configuration for each...Ch. 4 - From the labels of several commercial products,...
Ch. 4 - Why is it incorrect to speak of a molecule of...Ch. 4 - What information can you use to predict whether a...Ch. 4 - Predict which of the following compounds are ionic...Ch. 4 - Explain the difference between a nonpolar covalent...Ch. 4 - From its position in the periodic table, determine...Ch. 4 - From its position in the periodic table, determine...Ch. 4 - From their positions in the periodic able, arrange...Ch. 4 - From their positions in the periodic table,...Ch. 4 - Which atoms can bond to sulfur so as to produce a...Ch. 4 - Which is the most polar bond? (a) CC (b) CH (c) NH...Ch. 4 - Identify the more polar bond in each of the...Ch. 4 - Which of the following molecules or ions contain...Ch. 4 - Name the following compounds: (a) CsCl (b) BaO (c)...Ch. 4 - Name of the following compounds: (a) NaF (b) Rb2O...Ch. 4 - Write the formulas of the following compounds: (a)...Ch. 4 - Write the formulas of the following compounds: (a)...Ch. 4 - Write the formulas of the following compounds: (a)...Ch. 4 - Write the formulas of the following compounds: (a)...Ch. 4 - Each of the following compounds contains a metal...Ch. 4 - Each of the following compounds contains a metal...Ch. 4 - The following ionic compounds are found in common...Ch. 4 - The following ionic compounds are found in common...Ch. 4 - What are the IUPAC names of the following...Ch. 4 - Write the Lewis symbols for each of the following...Ch. 4 - Many monatomic ions are found in seawater,...Ch. 4 - Write the Lewis symbols of the ions in each of the...Ch. 4 - Iii (he Lewis structures listed here, M and X...Ch. 4 - Write the Lewis structure for the diatomic...Ch. 4 - Write Lewis structures for the following: (a) H2...Ch. 4 - Write Lewis structures for the following: (a) O2...Ch. 4 - Write Lewis structures for the following: (a) ClF3...Ch. 4 - Write Lewis structures for the following: (a) SeF6...Ch. 4 - Write Lewis structures for: (a) PO43 (b) ICl4 (c)...Ch. 4 - Correct the following statement: The bonds in...Ch. 4 - Write Lewis structures for the following molecules...Ch. 4 - Methanol, H3COH, is used as the fuel in some race...Ch. 4 - Many planets in our solar system contain organic...Ch. 4 - Carbon tetrachloride was formerly used in fire...Ch. 4 - Identify the atoms that correspond to each of the...Ch. 4 - The arrangement of atoms in several biologically...Ch. 4 - A compound with a molar mass of about 28 g/mol...Ch. 4 - A compound with a molar mass of about 42 g/mol...Ch. 4 - Two arrangements of atoms are possible for a...Ch. 4 - How are single, double, and triple bonds similar?...Ch. 4 - Write resonance forms that describe the...Ch. 4 - Write resonance forms that describe the...Ch. 4 - Write the resonance forms of ozone, Q3, the...Ch. 4 - Sodium nitrite, which has been used to preserve...Ch. 4 - In terms of the bonds present, explain why acetic...Ch. 4 - Write the Lewis structures for the following, and...Ch. 4 - Toothpastes containing sodium hydrogen carbonate...Ch. 4 - Determine the formal charge of each element in the...Ch. 4 - Determine the formal charge of each element in the...Ch. 4 - Calculate the formal charge of chlorine in the...Ch. 4 - 54. Calculate the formal charge of each element in...Ch. 4 - Draw all possible resonance structures for each of...Ch. 4 - Based on formal charge considerations, which of...Ch. 4 - Based on formal charge considerations, which of...Ch. 4 - Based on formal charge considerations, which of...Ch. 4 - Draw the structure of hydroxylamine, H3NO, and...Ch. 4 - Iodine forms a series of fluorides (listed here)....Ch. 4 - Write the Lewis structure and chemical formula of...Ch. 4 - Which of the following structures would we expect...Ch. 4 - Sulfuric acid is the industrial chemical produced...Ch. 4 - Explain why the HOH molecule is bent, whereas the...Ch. 4 - What feature of a Lewis structure can be used to...Ch. 4 - Explain the difference between electron-pair...Ch. 4 - Why is the HNH angle in NH3 smaller than the HCH...Ch. 4 - Explain how a molecule that contains polar bonds...Ch. 4 - As a general rule, MX molecules (where M...Ch. 4 - Predict the electron pair geometry and the...Ch. 4 - Identify the electron pair geometry and the...Ch. 4 - What are the electron-pair geometry and the...Ch. 4 - Predict the electron pair geometry and the...Ch. 4 - Identify the electron pair geometry and the...Ch. 4 - Predict the electron pair geometry and the...Ch. 4 - Which of the following molecules and ions contain...Ch. 4 - Which of these molecules and ions contain polar...Ch. 4 - Which of the following molecules have dipole...Ch. 4 - Identify the molecules with a dipole moment: (a)...Ch. 4 - The molecule XF3 has a dipole moment. Is X boron...Ch. 4 - The molecule XCl2 has a dipole moment. Is X...Ch. 4 - Is the Cl2BBCl2 molecule polar or nonpolar?Ch. 4 - There are three possible structures for PCl2F3...Ch. 4 - Describe the molecular structure around the...Ch. 4 - Draw the Lewis structures and predict the shape of...Ch. 4 - A molecule with the formula AB2, in which A and B...Ch. 4 - A molecule with the formula AB3, in which A and B...Ch. 4 - Draw the Lewis electron dot structures for these...Ch. 4 - What is the molecular structure of the stable form...Ch. 4 - A compound with a molar mass of about 42 g/mol...Ch. 4 - Use the simulation...Ch. 4 - Use the simulation...Ch. 4 - Use the Molecule Shape simulator...Ch. 4 - Use the Molecule Shape simulator...Ch. 4 - Use the Molecule Shape simulator...
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