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0
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38
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How does the prediction of catalytic activity and selectivity using quantum chemistry methods differ for different types of catalysts and reactions, and what factors contribute to the accuracy of these predictions?
answered
Feb 22
in
Quantum Chemistry
0
votes
31
views
What is the optimal reaction conditions for the synthesis of polyvinylpyrrolidone from vinylpyrrolidone monomer, and how do these conditions affect the yield and quality of the final product?
answered
Feb 21
in
Chemical synthesis
0
votes
27
views
What is the hybridization of the carbon atom in the molecule C2H2?
answered
Feb 20
in
Chemical bonding
0
votes
41
views
How can the yield and purity of desired flavors be optimized in the production process by adjusting the parameters such as reaction temperature, reaction time, and reactant ratios?
answered
Feb 14
in
Chemical engineering
0
votes
37
views
What is the mechanism behind the hormone insulin signalling in the regulation of glucose homeostasis? Detail the enzymatic reactions and molecular events that occur during this process.
answered
Feb 13
in
BioChemistry
0
votes
34
views
How does the surface area of the catalyst impact the rate of reaction in heterogeneous catalysis? Provide specific examples from recent scientific research to support your answer.
answered
Feb 13
in
Surface Chemistry
0
votes
60
views
What is the effect of changing the concentration of the reactants on the overall rate of a first-order chemical reaction? Provide experimental evidence to support your answer.
answered
Feb 13
in
Chemical kinetics
0
votes
59
views
How can we design drugs that specifically target bacteria without harming human cells, and what chemical modifications would be necessary to achieve this specificity?
answered
Feb 12
in
Medicinal Chemistry
0
votes
35
views
How can the mechanical and thermal properties of polymer-based composites be optimized for their efficient use in aerospace applications?
answered
Feb 7
in
Polymer Chemistry
0
votes
83
views
Develop a polymer-based composite that can withstand extreme heat and high stress conditions, making it suitable for use in turbine engine components in aerospace applications.
answered
Feb 4
in
Polymer Chemistry
0
votes
50
views
Calculate the heat absorbed or released during the crystallization of 50g of sodium acetate from a solution if the enthalpy change of the process is -3.9 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
78
views
Calculate the equilibrium constant (K) for the reaction that occurs when a nickel electrode is placed in a solution containing 1.0 M of nickel ions and 1.0 M of copper ions. The nickel electrode was placed in the solution, and the cell potential was measured to be 0.21 V at 25 °C.
answered
Jan 23
in
ElectroChemistry
0
votes
136
views
A student prepared a 0.2 M solution of sodium acetate and the equilibrium reaction for sodium acetate is CH3COO- + H2O ⇌ CH3COOH + OH-. The initial pH of the solution is 9. Calculate the new pH of the solution when 0.1 mol of NaOH is added to it.
answered
Jan 22
in
Chemical equilibrium
0
votes
85
views
A student needs to determine the concentration of a sulfuric acid solution using a sodium hydroxide solution of known concentration. The student performs a titration and records that it took 27.5 milliliters of the sodium hydroxide solution to neutralize 25 milliliters of the sulfuric acid solution. What is the concentration (in moles per liter) of the sulfuric acid solution?
answered
Jan 22
in
Chemical reactions
0
votes
49
views
How does the Social Identity Theory relate to the concept of persuasion?
answered
Jan 20
in
Psychology
0
votes
69
views
What is publication bias?
answered
Jan 20
in
Psychology
0
votes
49
views
How does mindfulness meditation help individuals struggling with trauma?
answered
Jan 20
in
Psychology
0
votes
52
views
According to the cognitive-behavioural theory, what is systematic desensitisation?
answered
Jan 17
in
Psychology
0
votes
19
views
How can we evaluate the degree of innovation in psychodynamic research?
answered
Jan 16
in
Psychology
0
votes
79
views
What is the term for the cell fragments involved in blood clotting, which stick to tears in blood vessels and to each other?
answered
Jan 7
in
Science
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