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How does the photochemical behavior of enantiomers differ from each other and what are the implications of these differences in terms of chemical and biological applications?
asked
Feb 22
in
PhotoChemistry
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1
answer
26
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What is the most commonly used protecting group for alcohols in organic synthesis and what is the mechanism of its removal under acidic conditions?
asked
Feb 21
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Organic Chemistry
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1
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32
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What is the mechanism of photoinduced electron transfer in a dye-sensitized solar cell, and what factors affect its efficiency?
asked
Feb 20
in
Physical Chemistry
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1
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36
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How does the central metal ion in metalloporphyrins and metallophthalocyanines affect their electronic properties and reactivity towards molecular oxygen?
asked
Feb 18
in
Coordination Chemistry
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1
answer
30
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What is the bond strength of carbon dioxide and how does it compare to the bond strength of methane?
asked
Feb 18
in
Chemical bonding
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1
answer
18
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What is the bond energy of the double bond between carbon and oxygen in a carbon dioxide molecule?
asked
Feb 18
in
Chemical reactions
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1
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67
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How does the process of lipid transport differ in low-density lipoproteins (LDL) and high-density lipoproteins (HDL)?
asked
Feb 13
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BioChemistry
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1
answer
37
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How can the synthesis of polypropylene from propylene monomer be optimized to achieve greater yields and higher molecular weight of the polymer?
asked
Feb 11
in
Chemical synthesis
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1
answer
35
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How can quantum chemistry be used to predict the reaction rates and mechanisms of chemical reactions? Please provide an example using a specific chemical reaction and explain the theoretical basis behind the prediction.
asked
Feb 5
in
Quantum Chemistry
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74
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Calculate the standard Gibbs free energy change, ΔG°, for the electrochemical reaction of 2 moles of aluminum (Al) being oxidized to form 3 moles of aluminum oxide (Al2O3) in a standard state. Given that E°cell for the reaction is 1.66 V and the standard potential for the reduction of Al3+ ions to Al is -1.66 V.
asked
Feb 3
in
ElectroChemistry
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72
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Calculate the standard enthalpy change (in kJ/mol) for the following chemical reaction at 298 K:2SO2(g) + O2(g) → 2SO3(g)Given the standard enthalpies of formation (∆Hf°) at 298 K for SO2(g), O2(g), and SO3(g) are -296.8 kJ/mol, 0 kJ/mol, and -396.0 kJ/mol, respectively.
asked
Feb 3
in
Physical Chemistry
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1
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60
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How does changing the concentration of the reactants affect the reaction rate and efficiency in the chemical reaction between sodium thiosulfate and hydrochloric acid?
asked
Feb 3
in
Chemical kinetics
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1
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91
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Identify the type of bonding in calcium chloride and justify your answer with specific characteristics of the compound.
asked
Jan 31
in
Inorganic Chemistry
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1
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83
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What is the rate constant and activation energy for the following reaction using quantum chemical calculations: 2NO + O2 → 2NO2?
asked
Jan 31
in
Computational Chemistry
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1
answer
122
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What is the concentration of chloride ions present in a sample of seawater using an ion-selective electrode?
asked
Jan 30
in
Analytical Chemistry
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1
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63
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How can UV-Vis spectroscopy be used to identify the presence of -OH functional group in a given organic compound?
asked
Jan 29
in
Analytical Chemistry
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1
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85
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A chemistry student wants to measure the rate of a chemical reaction. The reaction involves the reaction between zinc and hydrochloric acid. The student weighed out 0.5 grams of zinc and mixed it with 50 mL of 0.5 M hydrochloric acid. The student measured the time it took for the reaction to complete and found it took 3 minutes to produce all the hydrogen gas. Calculate the rate of the reaction in grams of zinc per minute.
asked
Jan 22
in
Chemical reactions
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1
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143
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What type of ether is produced as a major byproduct when ethylene oxide is reacted with a silver catalyst?
asked
Jan 21
in
Organic Chemistry
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1
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43
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What is the two-factor theory of anxiety?
asked
Jan 20
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Psychology
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1
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48
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Why might someone choose existential-humanistic therapy?
asked
Jan 20
in
Psychology
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