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What is the relationship between light intensity and the rate of photochemical reactions in the presence of a certain photosensitive molecule? How does this relationship vary with changes in the intensity and wavelength of light used?
asked
Feb 24
in
PhotoChemistry
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votes
1
answer
29
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What is the balanced chemical equation for the preparation of 2,4,6-trinitrotoluene from toluene and nitric acid? Also, calculate the theoretical yield of 2,4,6-trinitrotoluene if 50 grams of toluene and excess nitric acid are used in the reaction.
asked
Feb 22
in
Chemical synthesis
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1
answer
29
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What is the predicted molecular geometry and polarity of a water molecule?
asked
Feb 22
in
Inorganic Chemistry
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1
answer
34
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What is the net yield of ATP per one cycle of the Citric Acid Cycle and Oxidative Phosphorylation?
asked
Feb 21
in
BioChemistry
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1
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30
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What is the most efficient method for synthesizing polystyrene from styrene monomer at a large scale while minimizing waste and maximizing yield?
asked
Feb 21
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Chemical synthesis
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1
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38
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What factors determine the color of inorganic compounds? How can we predict the color of a compound based on its composition and structure?
asked
Feb 18
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Inorganic Chemistry
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1
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34
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How does the choice of processing technique affect the mechanical properties of a polymer product?
asked
Feb 18
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Polymer Chemistry
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1
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31
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How does the adsorption behavior of oxygen molecules on a copper surface change with the surface coverage and the presence of defects, as predicted by density functional theory calculations?
asked
Feb 17
in
Computational Chemistry
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1
answer
27
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How can we predict the crystal structure of inorganic solids with different compositions and bonding arrangements?
asked
Feb 14
in
Inorganic Chemistry
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1
answer
37
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How can we design a polymer-based smart material that undergoes a reversible color change in response to changes in temperature?
asked
Feb 12
in
Polymer Chemistry
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1
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50
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How can photochemical processes be utilized to degrade pollutants in the environment such as organic compounds and heavy metals, and what are the factors that affect the efficiency of the degradation process?
asked
Feb 5
in
PhotoChemistry
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votes
1
answer
111
views
Calculate the standard entropy change for the reaction of 2 moles of nitrogen gas reacting with 5 moles of oxygen gas to produce 2 moles of nitrogen monoxide gas at a constant pressure of 1 bar and 298 K. Given the standard molar entropy of nitrogen gas, oxygen gas, and nitrogen monoxide gas to be 191.6 J K-1 mol-1, 205.0 J K-1 mol-1, and 210.6 J K-1 mol-1, respectively.
asked
Feb 3
in
Chemical thermodynamics
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1
answer
85
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Calculate the rate constant and the activation energy for the polymerization of styrene at 60°C, given that the rate of polymerization is 2.21 x 10^-3 mol L^-1 s^-1 at an initial concentration of 0.02 mol L^-1 and the activation energy is 101 kJ mol^-1.
asked
Feb 3
in
Polymer Chemistry
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1
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83
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What is the potential toxicity of amoxicillin and how can it be investigated using in vitro and in vivo assays in medicinal chemistry?
asked
Jan 31
in
Medicinal Chemistry
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1
answer
114
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What is the composition and crystal structure of a mineral sample using X-ray diffraction analysis?
asked
Jan 30
in
Analytical Chemistry
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1
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69
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Calculate the bond dissociation energy of the carbon-hydrogen bond in methane (CH4), given that the reaction CH4(g) → CH3(g) + H(g) has a ΔH° of 435 kJ/mol.
asked
Jan 23
in
ThermoChemistry
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1
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87
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What is the pH of a 0.2 M solution of hydrochloric acid (HCl)?
asked
Jan 21
in
Inorganic Chemistry
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1
answer
33
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According to the change blindness paradigm, how do people miss changes in a visual display?
asked
Jan 20
in
Psychology
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1
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100
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How does electroconvulsive therapy ECT affect the brain?
asked
Jan 17
in
Psychology
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1
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70
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Who is affected by a spurious correlation?
asked
Jan 17
in
Psychology
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