Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 3, Problem 9E
The emission spectrum of cesium contains two lines whose frequencies are (a)
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Using the Nernst equation to calculate nonstandard cell voltage
A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction:
MnO2 (s)+4H* (aq)+2Cr²+ (aq) → Mn²+ (aq)+2H₂O (1)+2Cr³+ (aq)
+
2+
2+
3+
Suppose the cell is prepared with 7.44 M H* and 0.485 M Cr²+ in one half-cell and 7.92 M Mn² and 3.73 M Cr³+ in the other.
Calculate the cell voltage under these conditions. Round your answer to 3 significant digits.
☐
x10
μ
Х
5
?
000
日。
Calculating standard reaction free energy from standard reduction...
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG° for the following redox reaction.
Be sure your answer has the correct number of significant digits.
NO (g) +H₂O (1) + Cu²+ (aq) → HNO₂ (aq) +H* (aq)+Cu* (aq)
kJ
-
☐ x10
x10
olo
18
Ar
Calculating the pH of a weak base titrated with a strong acid
b
An analytical chemist is titrating 116.9 mL of a 0.7700M solution of aniline (C6H5NH2) with a 0.5300M solution of HNO3. The pK of aniline is 9.37.
Calculate the pH of the base solution after the chemist has added 184.2 mL of the HNO 3 solution to it.
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added.
Round your answer to 2 decimal places.
pH = ☐
☑
5
Chapter 3 Solutions
Chemistry Atoms First2e
Ch. 3 - The light produced by a red neon sign is due to...Ch. 3 - An FM radio station found at 103.1 on the FM dial...Ch. 3 - FM-95, an FM radio station, broadcasts at a...Ch. 3 - A bright violet line occurs at 435.8 nm in the...Ch. 3 - Light with a wavelength of 614.5 nm looks orange....Ch. 3 - Heated lithium atoms emit photons of light with an...Ch. 3 - A photon of light produced by a surgical laser has...Ch. 3 - When rubidium ions are heated to a high...Ch. 3 - The emission spectrum of cesium contains two lines...Ch. 3 - Photons of infrared radiation are responsible for...
Ch. 3 - One of the radiographic devices used in a...Ch. 3 - The eyes of certain reptiles pass a single visual...Ch. 3 - RGB color television and computer displays use...Ch. 3 - Answer the following questions about a Blu-ray...Ch. 3 - What is the threshold frequency for sodium metal...Ch. 3 - Why is the electron in a Bohr hydrogen atom bound...Ch. 3 - What does it mean to say that the energy of the...Ch. 3 - Using the Bohr model, determine the energy, in...Ch. 3 - The electron volt (eV) is a convenient unit of...Ch. 3 - Using the Bohr model, determine the lowest...Ch. 3 - Using the Bohr model, determine the lowest...Ch. 3 - Using the Bohr model, determine the energy of an...Ch. 3 - Using the Bohr model, determine the energy of an...Ch. 3 - How far from the nucleus in angstroms (1 angstrom...Ch. 3 - What is the radius, in angstroms, of the orbital...Ch. 3 - Using the Bohr model, determine the energy in...Ch. 3 - Using the Bohr model, determine the energy in...Ch. 3 - Consider a large number of hydrogen atoms with...Ch. 3 - How are the Bohr model and the Rutherford model of...Ch. 3 - The spectra of hydrogen and of calcium are shown...Ch. 3 - How are the Bohr model and the quantum mechanical...Ch. 3 - What are the allowed values for each of the four...Ch. 3 - Describe the properties of an electron associated...Ch. 3 - Answer the following questions: (a) Without using...Ch. 3 - Identify the subshell in which electrons with the...Ch. 3 - Which of the subshells described in the previous...Ch. 3 - Identify the subshell in which electrons with the...Ch. 3 - Which of the subshells described in the previous...Ch. 3 - Sketch the boundary surface of a dx2y2 and a py...Ch. 3 - Sketch the px and dxz orbitals. Be sure to show...Ch. 3 - Consider the orbitals shown here in outline. (a)...Ch. 3 - State the Heisenberg uncertainty principle....Ch. 3 - How many electrons could be held in the second...Ch. 3 - Which of the following equations describe...Ch. 3 - Write a set of quantum numbers for each of the...Ch. 3 - Read the labels of several commercial products and...Ch. 3 - Read the labels of several commercial products and...Ch. 3 - Using complete subshell notation (not...Ch. 3 - Using complete subshell notation ( 1s22s22p6, and...Ch. 3 - Is 1s22s22p6 the symbol for a macroscopic property...Ch. 3 - What additional information do we need to answer...Ch. 3 - Draw the orbital diagram for the valence shell of...Ch. 3 - Use an orbital diagram to describe the electron...Ch. 3 - Using complete subshell notation ( 1s22s22p6, and...Ch. 3 - Which atom has the electron configuration...Ch. 3 - Which atom has the electron configuration...Ch. 3 - Which ion with a +1 charge has the electron...Ch. 3 - Which of the following atoms contains only three...Ch. 3 - Which of the following has two unpaired electrons?...Ch. 3 - Which atom would be expected to have a half-filled...Ch. 3 - Which atom would be expected to have a half-filled...Ch. 3 - In one area of Australia, the cattle did not...Ch. 3 - Thallium was used as a poison in the Agatha...Ch. 3 - Write the electron configurations for the...Ch. 3 - Cobalt60 and iodine131 are radioactive isotopes...Ch. 3 - Write a set of quantum numbers for each of the...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Atoms of which group in the periodic table have a...Ch. 3 - Atoms of which group in the periodic table have a...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - Based on their positions in the periodic table,...Ch. 3 - List the following ions in order of increasing...Ch. 3 - Which atom and/or ion is (are) isoelectronic with...Ch. 3 - Which of the following atoms and ions is (are)...Ch. 3 - Compare both the numbers of protons and electrons...Ch. 3 - Of the five elements Al, Cl, I, Na, Rb, which has...Ch. 3 - Of the five elements Sn, Si, Sb, O, Te, which has...Ch. 3 - The ionic radii of the ions S2, Cl, and K+ are...Ch. 3 - Which main group atom would be expected to have...Ch. 3 - Explain why Al is a member of group 13 rather than...Ch. 3 - Using the periodic table, classify each of the...Ch. 3 - Using the periodic table, classify each of the...Ch. 3 - Using the periodic table, identify the lightest...Ch. 3 - Using the periodic table, identify the heaviest...Ch. 3 - Use the periodic table to give the name and symbol...Ch. 3 - Use the periodic table to give the name and symbol...Ch. 3 - Write a symbol for each of the following neutral...Ch. 3 - Write a symbol for each of the following neutral...Ch. 3 - Using the periodic table, predict whether the...Ch. 3 - Using the periodic table, predict whether the...Ch. 3 - For each of the following compounds, state whether...Ch. 3 - For each of the following compounds, state whether...Ch. 3 - For each of the following pairs of ions, write the...Ch. 3 - For each of the following pairs of ions, write the...
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