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1
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How does the release of heavy metals such as mercury, lead, and cadmium from industrial effluents impact the environment and human health, and what are the best techniques to measure and monitor their concentrations in water, soil, and air samples?
asked
3 days
ago
in
Environmental Chemistry
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votes
1
answer
27
views
How does the reaction rate affect the selectivity of a chemical reaction? Can you design an experiment to investigate this relationship?
asked
5 days
ago
in
Chemical kinetics
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votes
1
answer
24
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What are the main chemical reactions involved in the formation of acid rain, and how do they affect the pH levels of water bodies and soils in affected areas?
asked
Feb 20
in
Environmental Chemistry
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votes
1
answer
33
views
How does the absorption of light by a molecule of chlorophyll trigger the process of photosynthesis? Describe the key photophysical processes involved in the conversion of light energy to chemical energy within chloroplasts.
asked
Feb 17
in
Physical Chemistry
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1
answer
34
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What are the different types of liquid crystals and how do their properties vary based on their chemical structure?
asked
Feb 13
in
Physical Chemistry
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votes
1
answer
48
views
How do the photochemical properties of enantiomers differ, and how does this affect their behavior when exposed to light? Provide examples of enantiomers and their differential photochemical behavior in natural and synthetic settings.
asked
Feb 13
in
PhotoChemistry
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votes
1
answer
37
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How can the controlled release of a drug from a polymer-based drug delivery system be optimized to ensure maximum therapeutic efficacy and minimal adverse effects?
asked
Feb 6
in
Polymer Chemistry
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votes
1
answer
67
views
What is the difference between an aldehyde and a ketone, both structurally and chemically, and how do their properties affect their reactivity with other organic compounds?
asked
Jan 31
in
Organic Chemistry
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votes
1
answer
79
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What are the key historical milestones in the development of the periodic table of elements, and how did they contribute to our understanding of chemical elements and their behavior?
asked
Jan 30
in
Chemical education
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votes
1
answer
54
views
How can gas chromatography be used to analyze the composition of a complex mixture of hydrocarbons in a gasoline sample, and determine the percentages of each component present in the mixture?
asked
Jan 29
in
Analytical Chemistry
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votes
1
answer
56
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Calculate the equilibrium constant for the following electrochemical reaction at a temperature of 25°C:$$\ce{Co^{2+} + 2e^- <=> Co(s)}$$Given that the standard reduction potential for the half-reaction is $-0.28\,\text{V}$ and the concentration of $\ce{Co^{2+}}$ is $0.1\,\text{M}$.
asked
Jan 23
in
ElectroChemistry
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votes
1
answer
52
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Calculate the entropy change of an ideal monatomic gas at 1 atm and 300 K when it expands isothermally to 5 times its initial volume.
asked
Jan 23
in
Physical Chemistry
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votes
1
answer
31
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A reaction mixture initially contained 0.1 mol/L of reactant A and 0.2 mol/L of reactant B. When a catalyst was added, the rate of conversion of A and B to the product increased significantly. Calculate the new equilibrium concentration of reactant B if the equilibrium constant of the reaction is 0.1 and the initial equilibrium concentration of the product is 0.05 mol/L. Assume that the catalyst does not change the equilibrium constant.
asked
Jan 22
in
Chemical equilibrium
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votes
1
answer
9
views
According to the social impact theory, what factors influence a person's susceptibility to social influence?
asked
Jan 20
in
Psychology
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votes
1
answer
46
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What is the difference between metapsychology and social constructionism?
asked
Jan 16
in
Psychology
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votes
1
answer
53
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What is the main goal of archival research in psychology?
asked
Jan 15
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Psychology
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votes
1
answer
25
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What is the difference between optimal foraging theory and risk-sensitive foraging theory?
asked
Jan 14
in
Psychology
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votes
1
answer
34
views
Where is the site of photosynthesis?
asked
Jan 8
in
Science
0
votes
1
answer
57
views
What mammalian class has the greatest ability to learn?
asked
Jan 7
in
Science
0
votes
1
answer
68
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What are ionic solutes?
asked
Jan 3
in
Science
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