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What is the optimum reaction condition (temperature, pressure, and catalyst) required for the synthesis of polyethylene terephthalate (PET) using terephthalic acid and ethylene glycol as starting materials?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
17
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What is the Lewis structure of carbon dioxide (CO2)?
asked
4 days
ago
in
Chemical bonding
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votes
1
answer
20
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What is the mechanism for the formation of an ester from a carboxylic acid and an alcohol, and what are the different methods that can be used to synthesize esters?
asked
5 days
ago
in
Organic Chemistry
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votes
1
answer
36
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How does the disposal of heavy metals from industrial waste affect the acidity levels of nearby water bodies, and what are the potential consequences for aquatic life and human health?
asked
5 days
ago
in
Environmental Chemistry
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votes
1
answer
25
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How does the concentration of reaction products affect the rate of the chemical reaction between X and Y?
asked
6 days
ago
in
Chemical kinetics
0
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1
answer
29
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How do metal ions coordinate with enzymes and proteins to form active centers, and what is the role of these metal ions in catalytic reactions?
asked
Feb 13
in
Coordination Chemistry
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1
answer
35
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How do the photochemical properties of enantiomers differ and what are the potential applications of these differences in the field of photopharmacology?
asked
Feb 13
in
PhotoChemistry
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votes
1
answer
39
views
What are the chemical reactions involved in DNA replication and repair? How do DNA polymerases ensure the accuracy of DNA replication?
asked
Feb 12
in
BioChemistry
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votes
1
answer
37
views
How can we design an efficient and environmentally friendly system for the recovery of valuable metals, such as gold, silver, copper and palladium, from electronic waste that minimizes harmful waste and reduces energy consumption?
asked
Feb 12
in
Chemical engineering
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votes
1
answer
69
views
How can the size and shape of metal nanoparticles be controlled precisely for effective use in applications such as catalysis and biomedical imaging?
asked
Feb 10
in
Materials Chemistry
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1
answer
31
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How can the mechanical and chemical properties of a polymer-based paint or coating be optimized for a specific application, such as an exterior coating for a steel bridge exposed to harsh weather conditions?
asked
Feb 7
in
Polymer Chemistry
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votes
1
answer
48
views
How does an increase or decrease in temperature affect the fluidity of the cell membrane?
asked
Jan 31
in
BioChemistry
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votes
1
answer
48
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Calculate the heat of mixing (in kJ/mol) when 100 mL of 0.2 M HCl is added to 200 mL of 0.1 M NaOH at 25°C. Assume the density of the resulting solution is 1 g/mL and specific heat capacity is 4.18 J/(g*K). Also, assume the heat capacity of the solution is the same as water.
asked
Jan 23
in
ThermoChemistry
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1
answer
31
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Ammonia and hydrochloric acid react to form ammonium chloride according to the equation: NH3(g) + HCl(g) ⇌ NH4Cl(s). If a student were to add 0.1 moles of NH4Cl to the mixture at equilibrium and the volume of the container is constant, what will be the new concentration of NH3(g) and HCl(g) in the mixture?
asked
Jan 22
in
Chemical equilibrium
0
votes
1
answer
64
views
What is the molecular formula of benzene and what is the difference between the resonance structures of benzene?
asked
Jan 21
in
Organic Chemistry
0
votes
1
answer
62
views
When was the first Diagnostic and Statistical Manual of Mental Disorders DSM released?
asked
Jan 20
in
Psychology
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votes
1
answer
58
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According to the diathesis-stress model, what role does family history play in mental illness?
asked
Jan 17
in
Psychology
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votes
1
answer
11
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What is the relationship between cognitive load and the effectiveness of AI models?
asked
Jan 17
in
Psychology
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1
answer
42
views
According to social exchange theory, what is reciprocity?
asked
Jan 16
in
Psychology
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1
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40
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According to cognitive theory, what is the cause of depression?
asked
Jan 16
in
Psychology
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