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1
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23
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How does the photoexcitation wavelength affect the luminescent properties of materials doped with europium ions under ambient conditions?
asked
Feb 22
in
PhotoChemistry
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votes
1
answer
31
views
How does the pH of a solution affect the rate of a chemical reaction between substance A and substance B?
asked
Feb 22
in
Chemical kinetics
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votes
1
answer
30
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What is the amount of energy required to break the single C-H bond in the methane (CH4) molecule? Provide the answer in units of kilojoules per mole (kJ/mol).
asked
Feb 20
in
Chemical reactions
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votes
1
answer
60
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How does temperature affect the reaction rate of the reaction between sodium thiosulfate and hydrochloric acid, and how can this effect be quantitatively measured?
asked
Feb 17
in
Chemical kinetics
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votes
1
answer
97
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What is the role of metal ions in the catalytic activity of metalloenzymes and metalloproteins? Provide specific examples and discuss the coordination chemistry involved in these processes.
asked
Feb 13
in
Coordination Chemistry
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1
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83
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What is the role of the chelation agent ethylenediaminetetraacetic acid (EDTA) in the chelation therapy of lead poisoning, and what is the coordination chemistry behind its ability to remove lead ions from the body?
asked
Feb 13
in
Coordination Chemistry
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1
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28
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How can the efficiency of the production process for the pharmaceutical drug be optimized with the use of catalysts?
asked
Feb 7
in
Chemical engineering
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1
answer
43
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How can the chemical structures and properties of natural compounds be modified and optimized to develop new treatments for inflammatory diseases such as rheumatoid arthritis?
asked
Feb 6
in
Medicinal Chemistry
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1
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80
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Consider the reaction: Cu^2+ + 4NH3 ⇌ [Cu(NH3)4]^2+ If the initial concentration of Cu^2+ is 0.5 M and the initial concentration of NH3 is 2 M, what is the concentration of [Cu(NH3)4]^2+ at equilibrium if the concentration of NH3 is increased to 5 M? (Assume the volume of the solution remains constant and the temperature is kept constant.)
asked
Feb 3
in
Chemical equilibrium
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1
answer
74
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Consider a cell consisting of a zinc electrode in 1.0 M ZnSO4 solution and a copper electrode in 1.0 M CuSO4 solution. Calculate the standard cell potential of the cell at 25°C, given that the standard electrode potential for the zinc electrode is -0.76 V and for the copper electrode is +0.34 V.
asked
Feb 3
in
ElectroChemistry
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votes
1
answer
87
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How does changing the reactant concentration affect the rate constant of a complex reaction mechanism, and can this relationship be used to predict changes in the overall reaction rate?
asked
Feb 3
in
Chemical kinetics
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1
answer
106
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How does changing the pH of a redox reaction involving Fe3+ and Fe2+ affect the equilibrium position of the reaction, and how can this be predicted using the Nernst equation?
asked
Feb 3
in
Chemical equilibrium
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1
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96
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Compare the biological and environmental factors that contribute to human development.
asked
Jan 20
in
Psychology
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1
answer
93
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What is the role of positive relationships in positive psychology?
asked
Jan 20
in
Psychology
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1
answer
103
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What are the implications of neuroplasticity for cognitive development?
asked
Jan 20
in
Psychology
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1
answer
48
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According to the social comparison theory, how do individuals evaluate their own abilities and attitudes?
asked
Jan 17
in
Psychology
0
votes
1
answer
137
views
What is the purpose of a repeated measures ANOVA?
asked
Jan 17
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Psychology
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1
answer
53
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How can we improve cross-cultural training within psychology?
asked
Jan 16
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Psychology
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1
answer
97
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How does self-efficacy relate to positive psychology?
asked
Jan 15
in
Psychology
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1
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31
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Who contends that the grief process is divided into four stages: numbness, yearning, disorganisation and reorganisation?
asked
Jan 15
in
Psychology
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