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Answers by Regina84W280
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13
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What is the optimum temperature and pressure conditions required for the efficient synthesis of polyvinyl chloride from vinyl chloride monomer?
answered
3 days
ago
in
Chemical synthesis
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votes
33
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What is the most efficient reaction condition to synthesize high molecular weight polyvinylpyrrolidone from vinylpyrrolidone monomer and what is the effect of different initiators used in the reaction?
answered
3 days
ago
in
Chemical synthesis
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votes
25
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What is the most effective polymer characterization technique for determining the molecular weight distribution of a polymeric material and how does it work?
answered
3 days
ago
in
Polymer Chemistry
0
votes
19
views
How does the modification of amino acid side chains affect the degradation and turnover of proteins? Provide examples of such modifications and their impact on protein degradation machinery.
answered
4 days
ago
in
BioChemistry
0
votes
24
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What is the effect of varying the printing temperature on the mechanical properties of a 3D printed polymer, and how can these properties be optimized for a specific application such as prosthetic devices or industrial tooling?
answered
5 days
ago
in
Materials Chemistry
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votes
6
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What is the effect of different types of amino acid residues in the binding site of protein on the stability of DNA-protein complex in molecular dynamics simulations?
answered
5 days
ago
in
Computational Chemistry
0
votes
24
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How does the crystallization speed of a polymer affect its morphology? Are there any specific factors that influence the crystallization speed, and how does it affect the properties of the final product?
answered
5 days
ago
in
Polymer Chemistry
0
votes
27
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What is the coordination geometry of the metal ion in the active site of carbonic anhydrase enzyme and how does it affect the function of the enzyme?
answered
6 days
ago
in
Coordination Chemistry
0
votes
25
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How does cooling rate and melt processing affect the crystallization behavior and morphology of polyethylene terephthalate (PET) ?
answered
6 days
ago
in
Polymer Chemistry
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votes
17
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How does the calculated dipole moment of a molecule using ab initio methods compare to the experimentally determined dipole moment?
answered
Feb 18
in
Computational Chemistry
0
votes
54
views
How does temperature affect the reaction rate of the reaction between sodium thiosulfate and hydrochloric acid, and how can this effect be quantitatively measured?
answered
Feb 17
in
Chemical kinetics
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votes
35
views
What are the possible chemical reactions that occur when microplastics interact with seawater, and how do these reactions affect the toxicity and bioaccumulation of microplastics in marine organisms?
answered
Feb 13
in
Environmental Chemistry
0
votes
39
views
How can the mechanical properties of biodegradable polymers be optimized for use in orthopedic implants?
answered
Feb 10
in
Materials Chemistry
0
votes
25
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How can electrokinetic remediation technology be utilized to clean up heavy metal contaminants from contaminated soil?
answered
Feb 5
in
Environmental Chemistry
0
votes
41
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Calculate the standard free energy change (ΔG°) for the following redox reaction at 298 K, given that E°cell = 0.91 V:Zn(s) + 2 Ag+(aq) → Zn2+(aq) + 2 Ag(s)
answered
Feb 3
in
Chemical thermodynamics
0
votes
48
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How does changing the pH affect the formation of the complex ion Cu(NH3)4 2+, when copper(II) sulfate and excess ammonia are mixed together? How can the equilibrium constant (Kc) be calculated for this reaction at different pH values?
answered
Feb 3
in
Chemical equilibrium
0
votes
66
views
What is the reactivity of an alkyne compared to an alkane or alkene, and how can this reactivity be utilized in organic synthesis reactions? Provide an example reaction that demonstrates this reactivity.
answered
Jan 31
in
Organic Chemistry
0
votes
104
views
What is the expected reactivity of a transition metal that has a completely filled d-subshell and an empty s-subshell? How does this reactivity compare to a transition metal that has a partially filled d-subshell and an empty s-subshell?
answered
Jan 30
in
Inorganic Chemistry
0
votes
66
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A student wants to calculate the reaction quotient, Q, for the following chemical reaction at 298 K:2H2(g) + O2(g) ⇌ 2H2O(g)If the partial pressures of H2, O2, and H2O are 0.25 atm, 0.15 atm, and 0.1 atm, respectively, what is the value of Q?
answered
Jan 22
in
Chemical thermodynamics
0
votes
53
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A student needs to determine the change in enthalpy (ΔH) for the reaction between methane (CH4) and oxygen (O2) to form carbon dioxide (CO2) and water (H2O) at a temperature of 25°C and a pressure of 1 atm. The initial concentrations of CH4 and O2 are both 0.1 M, and the final concentrations of CO2 and H2O are both 0.05 M. What is the change in enthalpy for this reaction at the given conditions?
answered
Jan 22
in
Physical Chemistry
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