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0
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21
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What is the optimal reaction condition, i.e. temperature, pressure, and catalyst type, for synthesizing polyethylene terephthalate from terephthalic acid and ethylene glycol to achieve the highest yield and quality of the product?
answered
4 days
ago
in
Chemical synthesis
0
votes
22
views
What is the most efficient method for synthesizing quantum dots with a narrow size distribution and high quantum yield using environmentally friendly solvents and non-toxic precursors?
answered
4 days
ago
in
Materials Chemistry
0
votes
8
views
How does the coordination chemistry of metalloproteins, specifically the binding of metal ions to histidine residues, affect the catalytic activity of enzymes such as carbonic anhydrase?
answered
Feb 19
in
Coordination Chemistry
0
votes
37
views
What is the role of metal ions in the catalytic activity of metalloenzymes and metalloproteins? Provide specific examples of metalloenzymes and metalloproteins and their mechanisms of action.
answered
Feb 13
in
Coordination Chemistry
0
votes
33
views
What is the role of glutamine synthetase in the assimilation of ammonia in nitrogen metabolism? And how does its activity change in response to changes in nitrogen availability?
answered
Feb 13
in
BioChemistry
0
votes
28
views
What is the effect of different types of doping on the electronic and optical properties of perovskite materials, specifically those used in solar cells, and how do these changes impact the efficiency of the cells?
answered
Feb 12
in
Quantum Chemistry
0
votes
49
views
How can the process for the production of the specialty chemical dimethyl carbonate be optimized to increase yield, reduce waste, and improve purity?
answered
Feb 10
in
Chemical engineering
0
votes
35
views
How can the adhesion and surface properties of polymeric materials be modified to enhance their performance in specific applications, such as biomedical implants or high-strength adhesives?
answered
Feb 6
in
Polymer Chemistry
0
votes
38
views
Determine the standard enthalpy change for the precipitation reaction between aqueous solutions of silver nitrate (AgNO3) and potassium chloride (KCl), given the molar concentrations of AgNO3 and KCl are 0.10 M and 0.20 M, respectively. The balanced chemical equation for the reaction is:AgNO3(aq) + KCl(aq) -> AgCl(s) + KNO3(aq)The enthalpies of formation for AgNO3(aq), KCl(aq), AgCl(s), and KNO3(aq) are -365.6 kJ/mol, -436.0 kJ/mol, -127.0 kJ/mol, and -494.6 kJ/mol, respectively.
answered
Feb 4
in
Chemical thermodynamics
0
votes
28
views
Calculate the standard enthalpy change for the dissolution of 5.00 g of solid sodium hydroxide (NaOH) in water, given that the molar enthalpy of dissolution of NaOH is -44.51 kJ/mol. Assume that the specific heat capacity and density of the solution are the same as pure water and that no heat is lost to the surroundings during the dissolution process.
answered
Feb 3
in
Chemical thermodynamics
0
votes
70
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What is the mechanism for the catalytic activity of carbonic anhydrase, a metalloenzyme that catalyzes the conversion of carbon dioxide to bicarbonate? Describe the coordination chemistry of the metal ion in the active site of carbonic anhydrase and how it facilitates the reaction.
answered
Jan 31
in
Coordination Chemistry
0
votes
62
views
What type of intermolecular forces are present in the compound benzene (C6H6) and how do they contribute to its physical properties?
answered
Jan 31
in
Chemical bonding
0
votes
79
views
What is the standard enthalpy change (∆H°) for the reaction: 2H2O(l) + 2O2(g) → 4H2O(l) at 25°C? Calculate the value using quantum chemical methods and compare it to the experimental value.
answered
Jan 31
in
Quantum Chemistry
0
votes
89
views
What is the effect of allosteric inhibition on the citric acid cycle and how does it regulate the metabolic pathway?
answered
Jan 31
in
BioChemistry
0
votes
65
views
Calculate the enthalpy of ionization of magnesium if 50 mL of 0.1 M HCl solution is added to 1 g of magnesium powder at 25°C, and the change in temperature is -10°C. The specific heat capacity of the solution is 4.18 J•g-1•K-1.
answered
Jan 23
in
ThermoChemistry
0
votes
82
views
What was the aim of Zimbardo's Stanford prison experiment?
answered
Jan 20
in
Psychology
0
votes
42
views
When was the Dual-Process Motivational Model introduced?
answered
Jan 20
in
Psychology
0
votes
62
views
Who developed the Behavioural Activation therapy and what were its main assumptions?
answered
Jan 20
in
Psychology
0
votes
65
views
When was the concept of dual process theory introduced to cognitive psychology?
answered
Jan 17
in
Psychology
0
votes
12
views
According to the validity theory, what is construct validity?
answered
Jan 17
in
Psychology
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