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0
votes
1
answer
24
views
How does the pH of a solution affect the structure and function of proteins?
asked
4 days
ago
in
BioChemistry
0
votes
1
answer
31
views
What is the mechanism involved in the catalytic reaction of hydrogenation of ethylene over a platinum catalyst, and how does the morphology and crystallographic orientation of the platinum catalyst affect its activity and selectivity?
asked
5 days
ago
in
Surface Chemistry
0
votes
1
answer
15
views
What is the Lewis structure for the molecule of carbon dioxide?
asked
5 days
ago
in
Chemical bonding
0
votes
1
answer
27
views
How does the formation of reaction products affect the rate of the chemical reaction between hydrochloric acid and magnesium ribbon?
asked
5 days
ago
in
Chemical kinetics
0
votes
1
answer
29
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What is the enthalpy change (in kJ/mol) for the combustion of propane (C3H8) using Hess's Law? Use the following information: C3H8 + 5O2 → 3CO2 + 4H2O ∆H = −2043 kJ/mol 2CO + O2 → 2CO2 ∆H = −566 kJ/mol H2 + 1/2O2 → H2O ∆H = −285.8 kJ/mol
asked
5 days
ago
in
ThermoChemistry
0
votes
1
answer
26
views
What is the efficiency of an electrochemical cell when the electrode potential is +0.6V and the cell voltage is 1.8V?
asked
6 days
ago
in
ElectroChemistry
0
votes
1
answer
26
views
What is the effect of particle shape on the phase behavior of liquid crystals, and how can Monte Carlo simulations be used to study this relationship?
asked
6 days
ago
in
Computational Chemistry
0
votes
1
answer
5
views
How does the chemical structure of hormones affect their ability to bind to specific receptors and initiate signaling pathways in target cells?
asked
Feb 18
in
BioChemistry
0
votes
1
answer
8
views
How can we design a polymer-based optical material that exhibits high refractive index and low optical dispersion?
asked
Feb 12
in
Polymer Chemistry
0
votes
1
answer
33
views
How can the practical application of chemistry be incorporated into the classroom to enhance students' understanding and engagement with the subject matter?
asked
Feb 10
in
Chemical education
0
votes
1
answer
36
views
How can the knowledge of the mechanism of photochemical reactions in organic compounds be used to predict the products formed and optimize reaction conditions for improved yield?
asked
Feb 7
in
PhotoChemistry
0
votes
1
answer
50
views
How can inadequate training for chemistry teachers affect students' learning outcomes and their interest in pursuing further education or careers in chemistry-related fields?
asked
Feb 5
in
Chemical education
0
votes
1
answer
52
views
Given the electrochemical reaction Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s), calculate the standard cell potential at 25°C if the standard reduction potentials are E°(Cu2+/Cu) = 0.34 V and E°(Zn2+/Zn) = -0.76 V.
asked
Feb 4
in
ElectroChemistry
0
votes
1
answer
10
views
Consider a closed system undergoing an irreversible expansion at constant pressure, calculate the change in entropy of the system if the initial and final volumes are V1 and V2, respectively, and assuming ideal gas behavior.
asked
Feb 3
in
Physical Chemistry
0
votes
1
answer
57
views
What is the effect of changing the concentration of reactants on the rate of a chemical reaction at equilibrium?
asked
Feb 3
in
Chemical kinetics
0
votes
1
answer
62
views
What are the key properties and structural characteristics that make ceramics suitable for high-temperature applications, and how do these properties compare to those of other materials used at high temperatures?
asked
Jan 31
in
Materials Chemistry
0
votes
1
answer
9
views
What is the effective method to mitigate acid mine drainage and improve water quality considering the chemistries involved in the process?
asked
Jan 30
in
Environmental Chemistry
0
votes
1
answer
63
views
Calculate the heat of crystallization of 10 grams of sodium acetate trihydrate (NaC2H3O2•3H2O) when it is cooled from 50°C to 10°C and crystallizes. The specific heat capacity of water is 4.18 J/g°C. The molar mass of sodium acetate is 82.03 g/mol.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
50
views
Calculate the heat of adsorption of hydrogen gas on a platinum surface given the initial temperature of the system is 298 K and the final temperature is 330 K. The mass of the platinum surface used is 5 grams, and the amount of hydrogen adsorbed is 0.01 moles. Assume the heat capacity of the system is constant at 25 J/K.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
56
views
Calculate the efficiency of an electrochemical cell with a standard potential of +0.80 V if the cell potential under operating conditions is +0.60 V and the current passing through the cell is 2.5 A.
asked
Jan 23
in
ElectroChemistry
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