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How does the size and shape of nanomaterials affect their catalytic activity for a specific reaction?
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1 day
ago
in
Materials Chemistry
0
votes
1
answer
27
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How does the size and shape of a catalyst affect its activity and selectivity in a chemical reaction?
asked
1 day
ago
in
Quantum Chemistry
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1
answer
24
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How does the reaction mechanism affect the rate of a chemical reaction? Provide a detailed explanation with examples from different reaction mechanisms.
asked
3 days
ago
in
Chemical kinetics
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votes
1
answer
15
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How does the rate of a photochemical reaction change with varying intensity and wavelength of light?
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3 days
ago
in
Physical Chemistry
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1
answer
16
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What is the most efficient and cost-effective method for producing a line of cosmetic products using sustainable ingredients, while minimizing waste and optimizing production steps, in a system designed for a small-scale manufacturing facility?
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4 days
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Chemical engineering
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21
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What type of polymer-based coating is most effective in increasing the durability and corrosion resistance of metal surfaces in outdoor applications?
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4 days
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Polymer Chemistry
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1
answer
25
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How does the monomer structure affect the properties of the polymer produced in the polymerization reaction?
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4 days
ago
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Organic Chemistry
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1
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32
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What is the purity of a sample of acetanilide if its melting point range is observed to be 114.5-116°C and the literature value for pure acetanilide is 114-115°C?
asked
5 days
ago
in
Analytical Chemistry
0
votes
1
answer
33
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What is the effect of temperature on the NMR spectra of a given organic compound?
asked
6 days
ago
in
Physical Chemistry
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votes
1
answer
19
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How does the coordination chemistry of metalloenzymes and metalloproteins affect their biological activity and reactivity? Provide specific examples of metalloenzymes and metalloproteins and their coordination chemistry.
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6 days
ago
in
Coordination Chemistry
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1
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41
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How can the production process of detergents be optimized to reduce the environmental impact of the manufacturing process?
asked
Feb 10
in
Chemical engineering
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1
answer
27
views
How can the irreversible process of mixing two gases at different temperatures be described using non-equilibrium thermodynamics? Provide a quantitative analysis of the process assuming ideal gas behavior, and explain the consequences of irreversible mixing.
asked
Feb 7
in
Physical Chemistry
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votes
1
answer
39
views
How can chemistry students effectively learn and conduct experiments that require specialized laboratory equipment without access to such equipment and facilities?
asked
Feb 4
in
Chemical education
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1
answer
57
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Given the chemical equation: N2 + 3H2 <-> 2NH3 and an initial concentration of N2 as 0.1M, H2 as 0.2M, and NH3 as 0. Calculate the equilibrium concentrations of each component at 298K if the reaction is exothermic and the pressure is increased. (Hint: Use Le Chatelier's principle to determine the direction of the shift and then use an ICE table to calculate the concentrations at equilibrium)
asked
Feb 4
in
Chemical reactions
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1
answer
59
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Calculate the change in enthalpy (ΔH) for the combustion of methane gas (CH4) at 25°C and constant pressure of 1 atm. The equation for the combustion of methane is:CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) Given the standard enthalpies of formation at 25°C are:ΔHf[CH4 (g)] = -74.87 kJ/mol ΔHf[CO2 (g)] = -393.5 kJ/mol ΔHf[H2O (l)] = -285.8 kJ/mol Assume that water is in its liquid phase at the end of the reaction.
asked
Jan 23
in
Physical Chemistry
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1
answer
54
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A chemistry student has 10 grams of sulfur and 15 grams of oxygen. Given the balanced equation for sulfur dioxide formation, how much sulfur dioxide can they produce? Which reactant will be the limiting reactant and what is the amount of the excess reactant?
asked
Jan 22
in
Chemical reactions
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votes
1
answer
23
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Why is virtual reality exposure therapy used?
asked
Jan 20
in
Psychology
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votes
1
answer
50
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What is the main finding of the Asch conformity studies?
asked
Jan 20
in
Psychology
0
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1
answer
80
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Who developed the Social-Ecological Model of Trauma Recovery?
asked
Jan 20
in
Psychology
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1
answer
12
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What is the role of cultural values in psychological research?
asked
Jan 16
in
Psychology
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