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What factors determine the selectivity of a chemical reaction, and how can quantum chemistry calculations be used to predict and optimize selectivity in chemical reactions involving large molecules such as proteins or DNA?
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1 day
ago
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Quantum Chemistry
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votes
1
answer
18
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What is the rate of polymerization at a specific temperature and monomer concentration for a vinyl monomer using a free radical mechanism?
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3 days
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Polymer Chemistry
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1
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23
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How does the photochemical property of luciferase enzyme found in fireflies differ from that of a protein present in bioluminescent bacteria, and what are the chemical mechanisms involved in the light emission process in each of these organisms?
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3 days
ago
in
PhotoChemistry
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19
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How does the particle size of nanomaterials affect their catalytic properties?
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3 days
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Materials Chemistry
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1
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12
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What is the intermediate involved in the bromination of alkenes using N-bromosuccinimide (NBS) as a brominating agent? Explain the mechanism of this reaction and the factors that affect the selectivity of the reaction.
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4 days
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Organic Chemistry
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31
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How does the chemical composition of a photosensitive material affect its photochemical properties, and how can this knowledge be used to optimize its use in photography?
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Feb 18
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PhotoChemistry
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32
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How does the use of Monte Carlo simulations improve our understanding of phase transitions in chemical systems?
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Feb 13
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Computational Chemistry
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1
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41
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How can the thermal properties of a polymer be analyzed using differential scanning calorimetry (DSC) technique?
asked
Feb 12
in
Polymer Chemistry
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1
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42
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How can we develop a more effective and targeted treatment for autoimmune diseases by utilizing the principles of medicinal chemistry, such as drug design and optimization?
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Feb 12
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Medicinal Chemistry
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1
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44
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What are the chemical constituents of crude oil and how do they interact with the environment during an oil spill?
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Feb 12
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Environmental Chemistry
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45
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How do Chlorofluorocarbons (CFCs) deplete the ozone layer and what can be done to mitigate their impact on the environment?
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Feb 12
in
Environmental Chemistry
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1
answer
58
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Calculate the standard enthalpy change for the following reaction at 25°C given the enthalpies of formation (in kJ/mol) of the compounds involved:CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)Hf(CaCO3) = -1206.9 kJ/molHf(CaCl2) = -795.8 kJ/molHf(CO2) = -393.5 kJ/molHf(H2O) = -285.8 kJ/molHf(HCl) = -92.31 kJ/mol
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Feb 3
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Chemical thermodynamics
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83
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How does the coordination chemistry of the metalloenzyme, carbonic anhydrase, contribute to its catalytic activity?
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Jan 31
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Coordination Chemistry
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64
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What is the dipole moment of the CO2 molecule?
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Jan 31
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Chemical bonding
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1
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71
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What specific strategies or techniques can a chemistry student utilize to adequately prepare for chemistry exams and improve their chances of achieving a better grade?
asked
Jan 30
in
Chemical education
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1
answer
52
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A certain polymerization reaction has a ΔH°rxn of -250 kJ/mol. If you need to make 500 grams of the polymer, how much energy in kilojoules will be released or absorbed during the reaction?
asked
Jan 22
in
ThermoChemistry
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1
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107
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A student is given the unbalanced equation for the reaction between magnesium sulfate and sodium hydroxide in aqueous solution: MgSO4 + NaOH -> Mg(OH)2 + Na2SO4. The student needs to balance the equation and determine the coefficients for each compound.
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Jan 21
in
Inorganic Chemistry
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43
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What is the name of the theory that suggests that our behaviour is the result of social and cultural influences?
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Jan 20
in
Psychology
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1
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76
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According to the Continuity Theory, how do individuals adapt to end-of-life challenges?
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Jan 17
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Psychology
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1
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35
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How can cognitive-behavioural therapy help individuals with sexual problems?
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Jan 17
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Psychology
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