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0
votes
1
answer
23
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How does the intensity of light affect the rate of the reaction between potassium permanganate and oxalic acid in acidic solution?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
19
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How does the photochemical properties of the active layer in photovoltaic cells affect the efficiency of the cell's conversion of sunlight to electrical energy?
asked
3 days
ago
in
PhotoChemistry
0
votes
1
answer
38
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How does increasing temperature affect the rate of a photochemical reaction involved in the formation of ozone from oxygen molecules?
asked
Feb 13
in
PhotoChemistry
0
votes
1
answer
31
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Identify and explain the types of isomerism present in the coordination compound [Co(en)2Cl2]+.
asked
Feb 13
in
Coordination Chemistry
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votes
1
answer
50
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How can the properties of ceramics, such as thermal conductivity and mechanical strength, be optimized for high-temperature applications such as in furnace linings or jet engine components?
asked
Feb 10
in
Materials Chemistry
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votes
1
answer
24
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How can the performance of polymer-based membranes for water treatment be improved by altering their chemical structure and properties?
asked
Feb 10
in
Polymer Chemistry
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votes
1
answer
41
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How can limited opportunities for hands-on experimentation in chemistry affect a student's overall understanding and appreciation of the subject?
asked
Feb 5
in
Chemical education
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votes
1
answer
50
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Explain the differences in the photochemical properties of transition metal complexes based on their ligand environments.
asked
Feb 4
in
PhotoChemistry
0
votes
1
answer
41
views
Calculate the vibrational frequencies and infrared spectra for a molecule of carbon dioxide (CO2) using quantum chemistry methods.
asked
Feb 3
in
Quantum Chemistry
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votes
1
answer
43
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Calculate the standard free energy change (ΔG°) for the following redox reaction: Zn (s) + 2H+ (aq) → Zn2+ (aq) + H2 (g)Given: ΔG°f (Zn2+) = -153.9 kJ/mol ΔG°f (H+) = 0 kJ/mol ΔG°f (H2) = 0 kJ/mol ΔG°f (Zn) = 0 kJ/mol
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
57
views
Calculate the resistance of an electrochemical cell constructed by using a copper electrode in a 1M copper (II) sulfate solution and a zinc electrode in a 1M zinc sulfate solution. The measured potential difference of the cell is 1.45 volts. The area of each electrode is 10cm² and the length of wire connecting the electrodes is 30cm with a cross-sectional area of 1 mm². The conductivity of copper (II) sulfate and zinc sulfate solutions at the given concentration is 98.3% and 89.9% respectively. What is the resistance (in ohms) of the electrochemical cell?
asked
Feb 3
in
ElectroChemistry
0
votes
1
answer
54
views
How can Raman spectroscopy be used to distinguish between different isomers of a compound in a sample?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
59
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Calculate the enthalpy of vaporization of water given the following information: - The boiling point of water is 100°C- The specific heat capacity of liquid water is 4.18 J/g·°C- The specific heat capacity of steam is 1.84 J/g·°C- The heat of fusion of water is 40.7 kJ/mol - The molar mass of water is 18.015 g/mol- The heat capacity of the container is negligible- Assume that the vaporized water behaves ideally and has a constant heat capacity
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
55
views
Calculate the cell potential for the following electrochemical reaction at 25°C: Zn(s) + 2AgNO3(aq) → Zn(NO3)2(aq) + 2Ag(s) Given: E°(Ag+/Ag) = +0.80 V E°(Zn2+/Zn) = −0.76 V
asked
Jan 23
in
ElectroChemistry
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votes
1
answer
13
views
A steel pipeline is being used to transport a chemical mixture containing sulfuric acid. Given the concentration of sulfuric acid in the mixture and the surface area of the pipeline, calculate the corrosion rate of the steel pipeline in millimeters per year. Show your calculation and explain the significance of the result.
asked
Jan 22
in
ElectroChemistry
0
votes
1
answer
72
views
A 1.00 gram sample of sucrose (C12H22O11) is completely hydrolyzed in solution with excess HCl. If the solution is cooled to room temperature, what is the change in enthalpy ($\Delta H$) for the reaction? The heat capacity of the solution is 4.18 J/(g*K) and the temperature change is -10°C.
asked
Jan 22
in
ThermoChemistry
0
votes
1
answer
52
views
According to the social neuroscience theory, how do social factors influence brain activity and vice versa?
asked
Jan 20
in
Psychology
0
votes
1
answer
40
views
How does the visual cliff experiment test depth perception?
asked
Jan 20
in
Psychology
0
votes
1
answer
24
views
According to research on cognitive dissonance, what do people experience when they hold contradictory beliefs or attitudes?
asked
Jan 20
in
Psychology
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votes
1
answer
41
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Why is internal consistency an important criterion for evaluating neuroscience theories?
asked
Jan 20
in
Psychology
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