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votes
1
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30
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How does the presence of heavy metals, such as cadmium, lead, and mercury, in soil affect the growth and productivity of crops in agriculture?
asked
Feb 22
in
Environmental Chemistry
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votes
1
answer
37
views
What is the effect of the molecular weight of a polymer on the properties of the resulting coating or paint?
asked
Feb 21
in
Polymer Chemistry
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votes
1
answer
37
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What is the effect of varying concentrations of hydroxyapatite nanoparticles on the mechanical properties of collagen-based biomaterials used in tissue engineering?
asked
Feb 20
in
Materials Chemistry
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votes
1
answer
21
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What is the effect of solvent polarity on the photochemical properties of fluorescent dyes?
asked
Feb 19
in
PhotoChemistry
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votes
1
answer
35
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What is the effect of pressure on the rate of the reaction between hydrogen gas and iodine gas to form hydrogen iodide gas, and how does this effect support or contradict the collision theory of chemical reactions?
asked
Feb 19
in
Chemical kinetics
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votes
1
answer
34
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How does the composition of landfill leachate affect the concentration of heavy metals in groundwater and what are the potential health impacts for those exposed to contaminated water?
asked
Feb 18
in
Environmental Chemistry
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votes
1
answer
33
views
What is the bond angle in the water molecule?
asked
Feb 18
in
Chemical bonding
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votes
1
answer
33
views
What is the balanced chemical equation for the single replacement reaction between zinc and hydrochloric acid?
asked
Feb 17
in
Chemical reactions
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votes
1
answer
32
views
How do persistent organic pollutants (POPs) affect the ecosystem and what are some viable solutions to reduce their impact on the environment?
asked
Feb 14
in
Environmental Chemistry
0
votes
1
answer
118
views
What is the oxidation state of manganese in potassium permanganate (KMnO4)?
asked
Feb 13
in
ElectroChemistry
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votes
1
answer
50
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How does the excessive use of fertilizers contribute to eutrophication in aquatic ecosystems and what are the potential consequences for the environment and human health?
asked
Feb 13
in
Environmental Chemistry
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votes
1
answer
63
views
How do Chlorofluorocarbons (CFCs) contribute to the depletion of the ozone layer, and what chemical reactions take place when CFCs react with ozone molecules?
asked
Feb 12
in
Environmental Chemistry
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votes
1
answer
32
views
How can the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol be optimized to improve the yield and purity of the final product?
asked
Feb 11
in
Chemical synthesis
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votes
1
answer
68
views
How can the sensitivity of Surface-enhanced Raman spectroscopy (SERS) be optimized for the detection of low concentration of analytes on a metallic substrate?
asked
Feb 10
in
Surface Chemistry
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votes
1
answer
38
views
How can the molecular structure of existing drugs be modified or optimized to improve their efficacy in treating metabolic disorders such as diabetes or obesity?
asked
Feb 10
in
Medicinal Chemistry
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votes
1
answer
46
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How can the formulation of drug delivery systems be optimized to improve the targeted delivery of therapeutics to specific tissues or organs, while reducing potential adverse effects on non-targeted tissues?
asked
Feb 7
in
Medicinal Chemistry
0
votes
1
answer
108
views
How does changing the pH value of the reactant solution affect the rate of photochemical reactions in the presence of a particular photosensitizer?
asked
Feb 3
in
PhotoChemistry
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votes
1
answer
121
views
How does altering the concentrations of reactants and products at equilibrium affect the rate of the forward and reverse reactions in a chemical system?
asked
Jan 31
in
Chemical kinetics
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votes
1
answer
64
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Calculate the magnetic moment of Fe(CO)₅ using Molecular Orbital Theory.
asked
Jan 23
in
Inorganic Chemistry
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1
answer
93
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How does the specific surface area of a solid catalyst affect the rate of reaction for the decomposition of hydrogen peroxide?
asked
Jan 22
in
Surface Chemistry
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