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0
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24
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What is the most efficient method for synthesizing polyethylene terephthalate from terephthalic acid and ethylene glycol while ensuring high yield and purity of the final product?
answered
6 days
ago
in
Chemical synthesis
0
votes
30
views
What is the effect of solvent polarity on the strength of intermolecular interactions between a solute and solvent in a solution, and how can this be quantified using quantum chemistry calculations?
answered
Feb 19
in
Quantum Chemistry
0
votes
35
views
How does the critical temperature of a superconducting material change when varying the type and concentration of dopant atoms added to it?
answered
Feb 19
in
Materials Chemistry
0
votes
34
views
What is the balanced chemical equation for the reaction between aluminium and copper (II) sulfate, and what type of redox reaction is this? (Hint: identify the oxidation state of each element before and after the reaction)
answered
Feb 17
in
Chemical reactions
0
votes
30
views
What is the optimum reaction conditions (temperature, pressure, and catalysts) required for the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol to achieve the highest yield and desired product properties?
answered
Feb 14
in
Chemical synthesis
0
votes
38
views
What are the coordination modes and functions of Metal ions in the active sites of metalloproteins?
answered
Feb 13
in
Coordination Chemistry
0
votes
38
views
What is the effect of increasing the temperature on the rate of the reaction between hydrochloric acid and magnesium ribbon, and how can this effect be explained using the Collision Theory?
answered
Feb 13
in
Chemical kinetics
0
votes
29
views
How can we design a new drug molecule for treating eczema that can penetrate the skin barrier and target the underlying inflammatory response in the skin cells?
answered
Feb 12
in
Medicinal Chemistry
0
votes
51
views
How can the synthesis of metal-organic frameworks be optimized to achieve better control over the size, shape, and surface properties of the resulting materials?
answered
Feb 11
in
Materials Chemistry
0
votes
32
views
How can the concentration of a drug in the body be measured and how does it relate to the drug's pharmacokinetics?
answered
Feb 6
in
Medicinal Chemistry
0
votes
44
views
Calculate the standard enthalpy change for the fusion of 2.5 moles of solid sulfur (S8) at its melting point (388 K) using the given information: ΔHfus = 9.73 kJ/mol ΔSfus = 22.8 J/(mol*K) The molar heat capacity of solid sulfur is 22.75 J/(mol*K) and the heat capacity of the liquid sulfur is 37.05 J/(mol*K).
answered
Feb 3
in
Chemical thermodynamics
0
votes
44
views
Calculate the standard change in entropy for the reaction below using the given standard enthalpy and temperature information: 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g) ΔH° = -770.2 kJ T = 298 K
answered
Feb 3
in
Inorganic Chemistry
0
votes
74
views
What is the optimal polymer carrier for the targeted delivery of a specific drug molecule to a particular site in the body?
answered
Jan 31
in
Polymer Chemistry
0
votes
49
views
Assuming standard conditions, calculate the standard enthalpy of combustion of methane (CH4), given that the standard enthalpies of formation of CH4 and H2O are -74.8 kJ/mol and -285.8 kJ/mol, respectively. The balanced chemical equation for the combustion of CH4 is:CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) What is the standard enthalpy change (ΔH°) for this reaction?
answered
Jan 22
in
ThermoChemistry
0
votes
67
views
A chemistry student wants to synthesize alum (KAl(SO4)2.12H2O) from 12 g of potassium hydroxide (KOH) and excess sulfuric acid (H2SO4). If the actual yield of the reaction is 9.3 g, what is the percent yield of this reaction?
answered
Jan 22
in
Chemical reactions
0
votes
56
views
When was the first use of electroencephalography EEG in psychology?
answered
Jan 20
in
Psychology
0
votes
41
views
Who proposed the cognitive-behavioural model of anxiety?
answered
Jan 20
in
Psychology
0
votes
23
views
What is meant by reflexivity in qualitative research?
answered
Jan 20
in
Psychology
0
votes
54
views
What is the role of positive psychology in building a sense of purpose?
answered
Jan 20
in
Psychology
0
votes
23
views
Where should we look when evaluating the practical utility of theories in organisational psychology?
answered
Jan 16
in
Psychology
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