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Questions by PalmaYuille
0
votes
1
answer
15
views
How does the regulation of glycolysis allow for efficient energy production in the human body?
asked
1 day
ago
in
BioChemistry
0
votes
1
answer
24
views
How does the reaction rate of the reaction between hydrochloric acid and magnesium metal change as the concentration of hydrochloric acid is varied?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
20
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How do the photochemical properties of dye and pigment molecules affect their performance in coloring materials and their ability to resist fading under different light conditions?
asked
3 days
ago
in
PhotoChemistry
0
votes
1
answer
23
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How does the molecular arrangement affect the supramolecular properties of organic molecules, and what computational methods can be used to simulate and predict these properties accurately?
asked
4 days
ago
in
Computational Chemistry
0
votes
1
answer
24
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What is the equilibrium constant (Kc) expression for the following chemical equation: 2NO2(g) ⇌ N2O4(g)? Given the concentration of NO2 to be 0.025 mol/L and the concentration of N2O4 to be 0.0105 mol/L at equilibrium, calculate the value of Kc.
asked
5 days
ago
in
Chemical reactions
0
votes
1
answer
22
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What is the environmental impact of a new industrial project that involves the production of a chemical that is known for its toxicity to aquatic organisms? How can the project be modified to minimize its impact on the environment?
asked
5 days
ago
in
Environmental Chemistry
0
votes
1
answer
23
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How does the degradation of different polymer types vary under exposure to UV radiation, and what chemical processes are involved in this degradation?
asked
6 days
ago
in
Polymer Chemistry
0
votes
1
answer
34
views
How does the accuracy of ab initio calculations of molecular properties compare to experimentally determined data?
asked
Feb 17
in
Computational Chemistry
0
votes
1
answer
25
views
What hybrid orbitals are present in the molecule CH4, and what is the bond angle between each of the hydrogen atoms?
asked
Feb 13
in
Chemical bonding
0
votes
1
answer
49
views
What is the role of chlorophyll pigments in the process of photosynthesis and how does it contribute to carbon fixation?
asked
Feb 12
in
BioChemistry
0
votes
1
answer
9
views
How can the production process for fertilizers be optimized to maximize yield and minimize waste while also reducing environmental impacts such as greenhouse gas emissions and eutrophication of water bodies?
asked
Feb 10
in
Chemical engineering
0
votes
1
answer
43
views
How can the durability and scratch resistance of polymer-based coatings be improved, while maintaining their transparency?
asked
Feb 7
in
Polymer Chemistry
0
votes
1
answer
26
views
How can computational methods be used to predict the formation and stability of supramolecular complexes between different organic molecules?
asked
Feb 5
in
Computational Chemistry
0
votes
1
answer
35
views
How can chemistry students enhance their learning experience and acquire practical skills in the absence of hands-on experimentation opportunities?
asked
Feb 4
in
Chemical education
0
votes
1
answer
52
views
How can we analyze the protein composition of a sample using electrophoresis and determine the relative quantity of each protein present?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
64
views
Calculate the heat of hydration for the reaction between 1 mol of anhydrous magnesium sulfate and enough water to produce 1 mol of hydrated magnesium sulfate, given that the enthalpy change of the reaction is -108 kJ/mol.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
52
views
Calculate the enthalpy change of isomerization for the conversion of cis-but-2-ene to trans-but-2-ene if the enthalpy of formation of cis-but-2-ene is -24.7 kJ/mol and the enthalpy of formation of trans-but-2-ene is -28.6 kJ/mol. The heat of combustion of but-2-ene is -2723 kJ/mol.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
51
views
Calculate the enthalpy change for the precipitation reaction between 25.0 mL of 0.100 M silver nitrate (AgNO3) and excess calcium chloride (CaCl2) solution at 25°C. The balanced equation for the reaction is:AgNO3(aq) + CaCl2(aq) → AgCl(s) + Ca(NO3)2(aq)Assume the density of the solutions is equal to 1.00 g/mL and the solutions have the same specific heat as water (4.18 J/g°C).
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
89
views
A chemistry student wants to calculate the enthalpy of adsorption for the adsorption of nitrogen gas on a solid adsorbent. The student knows that the initial and final pressures of the nitrogen gas are 1 bar and 0.5 bar, respectively, and the surface area of the adsorbent is 2m^2/g. The student also has data on the temperature and the amount of nitrogen gas adsorbed on the adsorbent. Can you help the student calculate the enthalpy of adsorption?
asked
Jan 22
in
ThermoChemistry
0
votes
1
answer
63
views
A 0.1 M solution of ammonia (NH3) has a pH of 11.64 at room temperature. If sodium hydroxide (NaOH) is added to this solution such that the concentration of OH- ions becomes 0.01 M, what will be the new pH of the solution? (Assume that the dissociation of water can be ignored)
asked
Jan 22
in
Chemical equilibrium
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