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1
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How does the size and shape of nanomaterials affect their catalytic activity in chemical reactions?
asked
Feb 24
in
Materials Chemistry
0
votes
1
answer
72
views
What is the optimal temperature and time required for the synthesis of highly stable CdSe quantum dots using the colloidal method, and how do these parameters affect the size and properties of the quantum dots synthesized?
asked
Feb 22
in
Materials Chemistry
0
votes
1
answer
74
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What is the equilibrium constant (Kc) expression for the following generic chemical reaction?aA(g) + bB(g) ⇌ cC(g) + dD(g)
asked
Feb 20
in
Physical Chemistry
0
votes
1
answer
76
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What is the effect of temperature on the photochemical reaction rate of a specific compound under constant light intensity?
asked
Feb 20
in
PhotoChemistry
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votes
1
answer
77
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How does the choice of exchange-correlation functional in density functional theory affect the prediction of reaction energetics and mechanisms in catalytic reactions involving complex transition metal catalysts?
asked
Feb 18
in
Computational Chemistry
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votes
1
answer
69
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How does the binding affinity between a protein and a ligand change when specific amino acid residues in the protein are mutated, and how can molecular dynamics simulations be used to predict and analyze these changes?
asked
Feb 17
in
Computational Chemistry
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votes
1
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90
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What is the effect of temperature on the adsorption of gases on solid surfaces? Compare and contrast the behavior of physisorption and chemisorption with respect to temperature dependence.
asked
Feb 17
in
Surface Chemistry
0
votes
1
answer
86
views
What are the photochemical properties that make certain materials photochromic and how can these properties be utilized in practical applications?
asked
Feb 14
in
PhotoChemistry
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votes
1
answer
120
views
How can the synthesis of polyethylene oxide from ethylene oxide monomer be optimized in terms of reaction conditions such as temperature and catalyst concentration to achieve the highest yield and purity of the product?
asked
Feb 11
in
Chemical synthesis
0
votes
1
answer
87
views
How can one predict the stability of inorganic compounds based on their chemical formula and structure?
asked
Feb 5
in
Inorganic Chemistry
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1
answer
137
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Design a chemical reactor for the production of ethylene oxide through the direct oxidation of ethylene. The reactor should have a production rate of 100 tons per day and maintain a constant temperature of 250°C. Assume a feed composition of 90% ethylene and 10% oxygen. The reactor should also have a conversion efficiency of at least 95%. Compute the necessary reactor volume and the optimal flow rate of ethylene and oxygen to achieve the desired production rate and conversion efficiency.
asked
Feb 3
in
Chemical engineering
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votes
1
answer
118
views
What are the specific photochemical properties responsible for the bioluminescence in certain organisms, and how do these properties differ from those of non-bioluminescent counterparts?
asked
Jan 31
in
PhotoChemistry
0
votes
1
answer
145
views
How can we quantify the concentration of lead (Pb) ions in a water sample using polarography?
asked
Jan 30
in
Analytical Chemistry
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votes
1
answer
98
views
How can the presence of carboxylic acid functional groups be identified in a compound using UV-Vis spectroscopy?
asked
Jan 29
in
Analytical Chemistry
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votes
1
answer
98
views
Calculate the enthalpy change of combustion for ethane (C2H6) when 5.00 g of ethane is completely burned in excess oxygen gas, given that the standard enthalpy of combustion of ethane is -1560 kJ/mol.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
80
views
A copper rod with a surface area of 5 cm² is coupled with an iron rod with a surface area of 10 cm² to form a galvanic cell. When the circuit is closed, the current flows for 2 hours and the weight loss of the iron rod was found to be 0.58 g. Determine the corrosion rate of the iron rod in millimeters per year (mm/yr) assuming a density of 7.86 g/cm³ for the iron.
asked
Jan 22
in
ElectroChemistry
0
votes
1
answer
101
views
According to Ivan Pavlov's classical conditioning, why does a dog salivate when it hears a bell?
asked
Jan 20
in
Psychology
0
votes
1
answer
63
views
What is situated cognition?
asked
Jan 20
in
Psychology
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1
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88
views
How can positive emotions contribute to positive psychology outcomes?
asked
Jan 20
in
Psychology
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1
answer
56
views
Who coined the term 'identity crisis'?
asked
Jan 17
in
Psychology
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