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What is the effect of changes in the concentration of the reactants on the rate of the reaction and the resulting profitability, using the example of the reaction between hydrochloric acid and magnesium?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
20
views
How do different simulation parameters (e.g. temperature, pressure, chain length) affect the behavior of polymer systems when using the Monte Carlo simulation method?
asked
4 days
ago
in
Computational Chemistry
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votes
1
answer
21
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What is the isomerism of the molecule CH3CH=CHCH3 and how many isomers it has?
asked
4 days
ago
in
Chemical bonding
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votes
1
answer
23
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Identify the type of inorganic compound formed between potassium and chlorine atoms, and explain your reasoning.
asked
5 days
ago
in
Inorganic Chemistry
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votes
1
answer
24
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How does the composition of glasses affect their refractive index and transmission properties, and how can these properties be optimized for use in optical applications such as lenses or fiber optics?
asked
Feb 18
in
Materials Chemistry
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votes
1
answer
25
views
How does the choice of photosensitizer affect the efficiency of photochemical reactions in different solvents?
asked
Feb 18
in
PhotoChemistry
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votes
1
answer
26
views
What is the balanced chemical equation for the synthesis reaction between sodium and chlorine gas to produce sodium chloride?
asked
Feb 17
in
Chemical reactions
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votes
1
answer
31
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What is the activation energy for the reaction of Zn and CuSO4 in a galvanic cell with a cell potential of 1.12V, given that the rate constant at 25°C is 5.7 × 10^-5 s^-1 and the activation energy is 87.4 kJ/mol?
asked
Feb 17
in
ElectroChemistry
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votes
1
answer
47
views
How does exposure to different air pollutants affect the respiratory health of individuals in urban areas compared to those living in rural areas, and what are the specific chemical mechanisms involved in these effects?
asked
Feb 13
in
Environmental Chemistry
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votes
1
answer
8
views
What is the coordination geometry and oxidation state of the metal ion in the active site of cytochrome c oxidase, a metalloenzyme involved in the electron transport chain? How does this metal ion facilitate the transfer of electrons during respiration?
asked
Feb 12
in
Coordination Chemistry
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votes
1
answer
35
views
How can the structural and chemical properties of a viral target be utilized to design and optimize small molecule inhibitors for more effective treatment of viral infections?
asked
Feb 10
in
Medicinal Chemistry
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votes
1
answer
31
views
How can the activity of a catalyst be optimized for a specific reaction?
asked
Feb 6
in
Physical Chemistry
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votes
1
answer
30
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How can molecular dynamics simulations be used to identify the specific interactions between DNA and protein molecules, and what are the potential applications of this information in the field of drug discovery and development?
asked
Feb 5
in
Computational Chemistry
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votes
1
answer
22
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How can chemistry educators provide adequate support for students with learning disabilities in the classroom to ensure their success in understanding and applying complex chemistry concepts?
asked
Feb 4
in
Chemical education
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votes
1
answer
36
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Design a distillation column for the separation of a mixture composed of 50% ethanol and 50% water. The column must produce a distillate that is at least 95% ethanol and a bottoms stream that is at most 5% ethanol. The feed rate is 1000 kg/h and the reflux ratio is to be determined by the student. Provide the complete design of the distillation column including the number of theoretical trays, feed tray location, and the diameter of the column.
asked
Feb 3
in
Chemical engineering
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votes
1
answer
38
views
Describe the photochemical properties of lanthanide complexes and explain how they differ from the photochemistry of other transition metal complexes? Provide examples of applications of lanthanide complexes in photochemistry.
asked
Feb 3
in
PhotoChemistry
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votes
1
answer
72
views
What is the reaction mechanism and rate determining step of the formation of a C-C bond between two ethene (C2H4) molecules catalyzed by a nickel-based catalyst? Use quantum chemical calculations to determine the activation energy, transition state geometry, and reaction energetics.
asked
Jan 31
in
Computational Chemistry
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votes
1
answer
108
views
A chemistry student is provided with 10 grams of copper oxide and 5 grams of magnesium. The student reacts the two substances to form copper and magnesium oxide. What is the limiting reactant in this reaction and how many grams of copper can be produced?
asked
Jan 22
in
Chemical reactions
0
votes
1
answer
48
views
What is object permanence according to Piaget?
asked
Jan 20
in
Psychology
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votes
1
answer
34
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Why is parsimony an important criterion for evaluating neuroscience theories?
asked
Jan 20
in
Psychology
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