21. Gold nanoparticles exhibit a variety of color characteristics at which relative scale? A. 10 -10 В. 10% C. 10 * D. 10 -7 E. 10 4 22. The formation of 1/2A2 + 2B2 + C → CAB4 has an enthalpy of formation of 104 kJ and change in entropy of -60.8 J/K at 30°C. What is the free energy and spontaneity of the reaction? A. - 85.6 kJ, spontaneous B. + 102 kJ, not spontaneous C. -102 kJ, spontaneous D. + 85.6 kJ, not spontaneous E. None of the above 27. What is the reduction potential for the half-reaction at 25°C Al3* + 3e- → AlI, if [AI³*] = 0.10 M and E° = -1.66 V? A. -1.84 V В. -1.60 V C. -1.64 V D -1.66 V E. -1.72 V _28. A piston cylinder contains air at 600 kPa, 290 K and a volume of 0.01m³. A constant pressure process give 54 kJ of work out. Find the final volume of the air. A. 0.05 m³ B. 0.01 m3 C. 0.10 m3 D. 0.15 m3 E. None of the above
21. Gold nanoparticles exhibit a variety of color characteristics at which relative scale? A. 10 -10 В. 10% C. 10 * D. 10 -7 E. 10 4 22. The formation of 1/2A2 + 2B2 + C → CAB4 has an enthalpy of formation of 104 kJ and change in entropy of -60.8 J/K at 30°C. What is the free energy and spontaneity of the reaction? A. - 85.6 kJ, spontaneous B. + 102 kJ, not spontaneous C. -102 kJ, spontaneous D. + 85.6 kJ, not spontaneous E. None of the above 27. What is the reduction potential for the half-reaction at 25°C Al3* + 3e- → AlI, if [AI³*] = 0.10 M and E° = -1.66 V? A. -1.84 V В. -1.60 V C. -1.64 V D -1.66 V E. -1.72 V _28. A piston cylinder contains air at 600 kPa, 290 K and a volume of 0.01m³. A constant pressure process give 54 kJ of work out. Find the final volume of the air. A. 0.05 m³ B. 0.01 m3 C. 0.10 m3 D. 0.15 m3 E. None of the above
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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From the given choices, please answer numbers 21-22 and 27-28 in the attached image. No need for solution.
![21. Gold nanoparticles exhibit a variety of color characteristics at which relative
scale?
А. 10-10
-9
В. 10
C. 10 *
D. 10 -7
E. 10 €
22. The formation of 1/2A2 + 2B2 + C → CAB4 has an enthalpy of formation of
104 kJ and change in entropy of -60.8 J/K at 30°C. What is the free energy and spontaneity of
the reaction?
A. - 85.6 kJ, spontaneous
B. + 102 kJ, not spontaneous
C. -102 kJ, spontaneous
D. + 85.6 kJ, not spontaneous
E. None of the above
27. What is the reduction potential for the half-reaction at 25°C
Al3* + 3e- → AI, if [Al³*] = 0.10 M and E° = -1.66 V?
A. -1.84 V
B. -1.60 V
C. -1.64 V
D -1.66 V
E. -1.72 V
28. A piston cylinder contains air at 600 kPa, 290 K and a volume of 0.01m³. A
constant pressure process give 54 kJ of work out. Find the final volume of the air.
A. 0.05 m³
B. 0.01 m3
C. 0.10 m³
D. 0.15 m3
E. None of the above](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F97ec540c-cac0-45fc-bbd2-2bb8d52f69b1%2F574e5c96-689f-4591-8ea8-8bddeb1e694d%2F6b1yxi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:21. Gold nanoparticles exhibit a variety of color characteristics at which relative
scale?
А. 10-10
-9
В. 10
C. 10 *
D. 10 -7
E. 10 €
22. The formation of 1/2A2 + 2B2 + C → CAB4 has an enthalpy of formation of
104 kJ and change in entropy of -60.8 J/K at 30°C. What is the free energy and spontaneity of
the reaction?
A. - 85.6 kJ, spontaneous
B. + 102 kJ, not spontaneous
C. -102 kJ, spontaneous
D. + 85.6 kJ, not spontaneous
E. None of the above
27. What is the reduction potential for the half-reaction at 25°C
Al3* + 3e- → AI, if [Al³*] = 0.10 M and E° = -1.66 V?
A. -1.84 V
B. -1.60 V
C. -1.64 V
D -1.66 V
E. -1.72 V
28. A piston cylinder contains air at 600 kPa, 290 K and a volume of 0.01m³. A
constant pressure process give 54 kJ of work out. Find the final volume of the air.
A. 0.05 m³
B. 0.01 m3
C. 0.10 m³
D. 0.15 m3
E. None of the above
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