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User Rudy59684212
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Questions by Rudy59684212
0
votes
1
answer
25
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How does the presence of impurities affect the adsorption properties of a metal surface in a catalytic reaction?
asked
3 days
ago
in
Physical Chemistry
0
votes
1
answer
28
views
What is the most efficient catalyst system for the synthesis of polypropylene from propylene monomer and how does it affect the properties of the resulting polymer?
asked
4 days
ago
in
Chemical synthesis
0
votes
1
answer
23
views
How does the molecular weight of a polymer affect its physical properties?
asked
4 days
ago
in
Physical Chemistry
0
votes
1
answer
21
views
What is the Miller index of a crystal face with a normal vector of [1 0 -1] in a cubic lattice with a lattice constant of 4 Å?
asked
5 days
ago
in
Physical Chemistry
0
votes
1
answer
23
views
What is the mechanism behind the luminescence in [Ru(bpy)3]Cl2 and how does it differ from the luminescence in other transition metal complexes?
asked
5 days
ago
in
PhotoChemistry
0
votes
1
answer
25
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Sure, here's a specific question:What is the product of the hydration reaction of 1-methylcyclohex-1-ene with aqueous sulfuric acid? Include the complete mechanism in your answer.
asked
5 days
ago
in
Organic Chemistry
0
votes
1
answer
24
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What is the effect of solvent polarity on the strength of intermolecular interactions between two molecules?
asked
6 days
ago
in
Quantum Chemistry
0
votes
1
answer
18
views
What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) at room temperature?
asked
6 days
ago
in
Surface Chemistry
0
votes
1
answer
32
views
What factors affect the compatibility and miscibility of polymer blends, and how can they be optimized to achieve desired properties such as tensile strength and impact resistance?
asked
Feb 18
in
Polymer Chemistry
0
votes
1
answer
25
views
How can we predict the chemical reactivity and selectivity of a molecule using quantum chemical calculations?
asked
Feb 14
in
Quantum Chemistry
0
votes
1
answer
32
views
How does the drug doxorubicin work in treating cancer, and what specific cellular processes and pathways does it target?
asked
Feb 12
in
Medicinal Chemistry
0
votes
1
answer
41
views
How can the size, shape, and composition of nanoparticles be precisely controlled during their synthesis using green chemistry principles to minimize environmental impact?
asked
Feb 10
in
Materials Chemistry
0
votes
1
answer
30
views
Determine the standard enthalpy change for the following reaction: 2 Fe (s) + 3/2 O2 (g) → Fe2O3 (s) Given the following data: - ΔHf° of Fe2O3 (s) = -826 kJ/mol - ΔHf° of O2 (g) = 0 kJ/mol - The heat capacity of the calorimeter is 135 J/°C Assume that the reaction takes place at constant pressure and that the heat absorbed by the calorimeter is negligible.
asked
Feb 4
in
Chemical thermodynamics
0
votes
1
answer
92
views
Design a supramolecular assembly using non-covalent interactions that could potentially be used for drug delivery and explain how it can be achieved through self-assembly techniques in physical chemistry.
asked
Jan 30
in
Physical Chemistry
0
votes
1
answer
65
views
What is the concentration of iron (II) ion in a sample of drinking water using colorimetry, if the absorbance of the sample is found to be 0.294 and the molar absorption coefficient of iron (II) complex is 10,500 M^-1 cm^-1 at the wavelength of 505 nm?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
61
views
Calculate the entropy change for the reaction: 2H2(g) + O2(g) → 2H2O(g)given that the standard molar entropies of H2(g), O2(g), and H2O(g) are 130.7 J/mol.K, 205.0 J/mol.K, and 188.8 J/mol.K, respectively.
asked
Jan 23
in
Chemical thermodynamics
0
votes
1
answer
54
views
Calculate the enthalpy change for the hydrolysis of 50 grams of sucrose (C12H22O11) when dissolved in 500 ml of water at 25°C. The molar mass of sucrose is 342.3 g/mol and the enthalpy change per mole of sucrose is -564.8 kJ/mol.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
79
views
A chemistry student needs to determine the effect of increasing the pressure on the equilibrium position of a reaction. Consider the following reaction at equilibrium: N2(g) + 3H2(g) ⇌ 2NH3(g) If the pressure is increased, will the reaction shift to the left or right, and in what direction will the reaction quotient, Q, shift as a result? Justify your answer using Le Chatelier's principle.
asked
Jan 22
in
Chemical equilibrium
0
votes
1
answer
69
views
When does source credibility influence persuasion?
asked
Jan 20
in
Psychology
0
votes
1
answer
48
views
What is the relationship between the prefrontal cortex and executive functions?
asked
Jan 20
in
Psychology
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