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0
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18
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What is the optimal ratio of diisocyanate and polyol required to synthesize polyurethane with desirable mechanical properties?
answered
4 days
ago
in
Chemical synthesis
0
votes
19
views
What is the effect of the molecular weight of a polymer on the electrical conductivity of a polymer-based electronic material?
answered
4 days
ago
in
Polymer Chemistry
0
votes
17
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What is the effect of varying concentrations of plasma treatment on the surface properties of a biopolymer-based biomaterial?
answered
6 days
ago
in
Surface Chemistry
0
votes
23
views
What is the best method to remediate soil contaminated with heavy metals such as lead, chromium, and cadmium, to reduce their impact on agricultural crops?
answered
Feb 17
in
Environmental Chemistry
0
votes
21
views
How does the addition of cholesterol affect the fluidity and stability of a lipid bilayer composed of phospholipids?
answered
Feb 17
in
Computational Chemistry
0
votes
23
views
How do persistent organic pollutants (POPs) affect the ecosystem and what are some viable solutions to reduce their impact on the environment?
answered
Feb 14
in
Environmental Chemistry
0
votes
38
views
How can the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine be optimized to produce the highest yield and purity of the final product?
answered
Feb 11
in
Chemical synthesis
0
votes
28
views
How can the level of volatile organic compounds (VOCs) in outdoor air be monitored and reduced to improve air quality in a given city or urban area? Determine the most effective strategies and technologies for reducing VOCs emissions and evaluate their potential impact on the environment and public health.
answered
Feb 7
in
Environmental Chemistry
0
votes
10
views
Consider two coordination compounds, [Co(NH3)4Cl2] and [Co(NH3)5Cl] with the same formula weight but different physical properties. Explain the type of isomerism present in each compound, draw their structures and identify which compound exhibits optical isomerism.
answered
Feb 3
in
Coordination Chemistry
0
votes
50
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Calculate the standard electrode potential (E°) for the reaction below at 298K using the standard reduction potentials given:2H⁺(aq) + 2e⁻ → H₂(g) E°= 0.00VFe³⁺(aq) + e⁻ → Fe²⁺(aq) E°=+0.77V 2H⁺(aq) + Fe³⁺(aq) → H₂(g) + Fe²⁺(aq)
answered
Feb 3
in
Chemical thermodynamics
0
votes
67
views
What new medicinal compounds or therapies can be developed for the treatment of psoriasis, a chronic skin disease characterized by scaly patches and inflammation?
answered
Jan 31
in
Medicinal Chemistry
0
votes
66
views
How can acetal protecting group be used in organic synthesis to selectively protect primary alcohols in the presence of secondary alcohols? Provide a step-by-step mechanism and give an example of a reaction that utilizes this strategy.
answered
Jan 30
in
Organic Chemistry
0
votes
59
views
Calculate the change in enthalpy (ΔH) for the combustion of 10 grams of propane (C3H8) if the heat released by the reaction is -2202 kJ.
answered
Jan 23
in
Chemical reactions
0
votes
67
views
A chemistry student needs to determine how the equilibrium concentration of products and reactants change when the temperature is increased in the reaction: 2 SO2 (g) + O2 (g) ⇌ 2 SO3 (g) Given the initial concentrations of 0.15 M SO2, 0.025 M O2, and 0 M SO3, and a temperature increase of 50°C, calculate the new equilibrium concentration of each compound using Le Chatelier's Principle.
answered
Jan 22
in
Chemical reactions
0
votes
70
views
What is the pH of 0.1 M solution of HCl knowing that its dissociation constant is 1.3 x 10^-4?
answered
Jan 22
in
Inorganic Chemistry
0
votes
55
views
According to attribution theory, what is the fundamental attribution error?
answered
Jan 20
in
Psychology
0
votes
80
views
Who developed the Social-Ecological Model of Trauma Recovery?
answered
Jan 20
in
Psychology
0
votes
35
views
Where is the prefrontal cortex located?
answered
Jan 20
in
Psychology
0
votes
25
views
According to the mere-exposure effect, what is more attractive to people?
answered
Jan 17
in
Psychology
0
votes
47
views
According to the Higher-Order Theory, what is a conscious experience?
answered
Jan 17
in
Psychology
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