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What is the optimum ratio of diisocyanate and polyol required for the synthesis of polyurethane of desired properties and how does the ratio affect the physical and chemical properties of the final product?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
21
views
What is the most effective method for synthesizing metal nanoparticles with a size range of 10-50 nm, using environmentally friendly and cost-effective approaches?
asked
4 days
ago
in
Materials Chemistry
0
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1
answer
23
views
How does the excited state dynamics of a molecule vary based on the type of solvents used in ab initio calculations?
asked
5 days
ago
in
Computational Chemistry
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1
answer
27
views
What is the effect of varying the cross-linking density on the water absorbency and swelling behavior of polymer-based superabsorbent materials?
asked
6 days
ago
in
Polymer Chemistry
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votes
1
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25
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How does the coordination chemistry of metalloenzymes such as carbonic anhydrase affect their enzymatic activity?
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6 days
ago
in
Coordination Chemistry
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1
answer
28
views
How do different surfactants in cleaners and detergents affect the surface tension of water?
asked
Feb 17
in
Surface Chemistry
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1
answer
23
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What are the effects of surface chemistry on the quality and safety of processed foods and beverages during storage?
asked
Feb 14
in
Surface Chemistry
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votes
1
answer
36
views
How can the photochemical properties of supramolecular assemblies be manipulated by varying the composition of the assembly?
asked
Feb 10
in
PhotoChemistry
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votes
1
answer
30
views
How can pH affect the stability of a colloidal solution, and what are the methods for controlling the coagulation of colloidal particles at different pH values?
asked
Feb 5
in
Surface Chemistry
0
votes
1
answer
30
views
How can chemistry teachers provide better support and accommodations for students with learning disabilities to effectively learn and understand chemistry concepts and apply them in laboratory experiments?
asked
Feb 5
in
Chemical education
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1
answer
72
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What is the concentration of iron(II) sulfate in a 20 mL sample solution that has an absorbance of 0.45 at 562 nm, given that the molar extinction coefficient of iron(II) sulfate at that wavelength is 7,590 M^-1cm^-1?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
11
views
Calculate the exchange current density for a zinc electrode immersed in a 1.0 M solution of zinc sulfate at 25°C when the overpotential is 0.05 V. The standard reduction potential for the Zn2+/Zn couple is -0.76 V. The transfer coefficient is 0.5. Assume that the concentration of the electrolyte does not change significantly during the reaction.
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Jan 23
in
ElectroChemistry
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1
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59
views
According to the metaphor theory of language, how do we understand metaphorical language?
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Jan 20
in
Psychology
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1
answer
36
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How might social support theory inform end-of-life care?
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Jan 20
in
Psychology
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1
answer
40
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What is a key factor in resolving intergroup conflict?
asked
Jan 20
in
Psychology
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votes
1
answer
10
views
What is the significance of oral tradition in indigenous psychology?
asked
Jan 20
in
Psychology
0
votes
1
answer
35
views
How does biopsychology relate to cognitive psychology?
asked
Jan 17
in
Psychology
0
votes
1
answer
30
views
What is a corpus in discursive psychology?
asked
Jan 16
in
Psychology
0
votes
1
answer
13
views
Why is it necessary to consider the impact of stress and trauma when evaluating eating disorders?
asked
Jan 16
in
Psychology
0
votes
1
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50
views
What are criticisms of Bayesian modelling?
asked
Jan 15
in
Psychology
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