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1
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How does the coordination environment around the central metallic ion affect the electronic and optical properties of metalloporphyrins and metallophthalocyanines?
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
26
views
How does the chemical structure of photovoltaic materials affect their photochemical properties and efficiency in converting light energy into electrical energy?
asked
Feb 18
in
PhotoChemistry
0
votes
1
answer
22
views
How can we use polymer-based drug delivery systems to improve the efficacy and safety of cancer chemotherapy drugs?
asked
Feb 14
in
Polymer Chemistry
0
votes
1
answer
32
views
What are the key differences between ionic, covalent, and metallic solids? Using specific examples, explain how you can identify the type of inorganic solid that a substance belongs to based on its physical properties and bonding characteristics.
asked
Feb 13
in
Inorganic Chemistry
0
votes
1
answer
31
views
What are the methods for improving the efficiency of light emission in polymer-based optical materials?
asked
Feb 13
in
Polymer Chemistry
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votes
1
answer
27
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How can chemistry-related extracurricular activities be made more widely available to students in areas where resources are limited, in order to enhance their learning and interest in the subject?
asked
Feb 5
in
Chemical education
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votes
1
answer
51
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Design a distillation column to separate a mixture that contains 40% ethanol and 60% water by weight with a desired ethanol purity of 95%. The feed rate of the mixture is 100 kg/hr and the reflux ratio is 3:1. Determine the number of theoretical plates required and the height of the column. Assume that the total condenser and reboiler are both at 100°C and that the distillate leaving the column is 90% liquid and 10% vapor.
asked
Feb 4
in
Chemical engineering
0
votes
1
answer
10
views
Consider the redox reaction 2Fe^2+(aq) + H2O2(aq) + 2H^+(aq) ⟷ 2Fe^3+(aq) + 2H2O(l). If a catalyst is added to the reaction mixture at equilibrium, will the concentration of Fe^3+ increase, decrease or remain the same? Justify your answer mathematically.
asked
Feb 3
in
Chemical equilibrium
0
votes
1
answer
80
views
What are the specific photochemical properties responsible for the bioluminescence exhibited by organisms such as fireflies, jellyfish, and bacteria, and how can this knowledge be applied in the synthesis of new luminescent molecules for various applications?
asked
Jan 31
in
PhotoChemistry
0
votes
1
answer
11
views
Calculate the bond dissociation energy of the CO molecule, given that the bond length is 1.128 Å and the electron affinity of carbon and oxygen are -154 kJ/mol and -141 kJ/mol, respectively.
asked
Jan 23
in
Chemical bonding
0
votes
1
answer
53
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Calculate the amount of energy required to completely desorb 2 moles of hydrogen molecules from a metal surface if the enthalpy of desorption for each H2 molecule is 436 kJ/mol.
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
53
views
A brass alloy electrode with an area of 5 cm² is immersed in a 0.5 M NaCl solution at 25°C. Given that the standard potential of the electrode is -0.35 V versus a standard hydrogen electrode, calculate the corrosion current density of the electrode in the given environment using Tafel extrapolation.
asked
Jan 22
in
ElectroChemistry
0
votes
1
answer
40
views
What is the name of the experiment conducted by Philip Zimbardo investigating the power of social roles?
asked
Jan 20
in
Psychology
0
votes
1
answer
42
views
What are the psychological principles underlying reinforcement learning?
asked
Jan 20
in
Psychology
0
votes
1
answer
26
views
How does the narrative theory view recovery after trauma?
asked
Jan 17
in
Psychology
0
votes
1
answer
58
views
How have feminist critiques impacted the field of psychology?
asked
Jan 16
in
Psychology
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votes
1
answer
67
views
Who developed the concept of neuroleptic malignant syndrome?
asked
Jan 16
in
Psychology
0
votes
1
answer
12
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According to Albert Bandura, how does learning occur through observation?
asked
Jan 15
in
Psychology
0
votes
1
answer
52
views
What is the contingency theory of leadership?
asked
Jan 15
in
Psychology
0
votes
1
answer
39
views
What is neglect?
asked
Jan 14
in
Psychology
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