Answers by ErickB565479

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How does the size and shape of gold nanoparticles affect their photochemical properties?

answered Feb 24 in PhotoChemistry

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What is the major difference between primary, secondary and tertiary amines? Provide a detailed mechanism to explain the reaction that occurs when a primary amine reacts with carboxylic acid to form an amide.

answered Feb 20 in Organic Chemistry

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How does the addition of a catalyst affect the energy barrier of a reaction mechanism and ultimately the rate of reaction, as predicted by density functional theory calculations?

answered Feb 17 in Computational Chemistry

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How can the design of drugs be optimized to specifically target cancer cells while minimizing harmful effects on healthy cells?

answered Feb 7 in Medicinal Chemistry

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How can the chemical properties of certain compounds be modified to enhance their effectiveness in treating inflammatory bowel diseases such as Crohn's disease and ulcerative colitis?

answered Feb 6 in Medicinal Chemistry

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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

answered Feb 3 in Chemical thermodynamics

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How does changing the pH of a redox reaction affect its equilibrium position? Please provide a specific example of a redox reaction and explain the possible changes in its equilibrium position when the pH is increased or decreased.

answered Feb 3 in Chemical equilibrium

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How does changing the metal center in a complex affect its photochemical properties? Compare the photochemical properties of a series of metal complexes with different metal centers under identical conditions.

answered Feb 3 in PhotoChemistry

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Calculate the Gibbs free energy change at standard conditions for the combustion of propane:C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) Given the standard enthalpy of formation data: ΔH°f(CO2(g)) = -393.5 kJ/mol ΔH°f(H2O(l)) = -285.8 kJ/mol ΔH°f(C3H8(g)) = -103.85 kJ/mol and the standard entropy data: S°(CO2(g)) = 213.6 J/(mol•K) S°(H2O(l)) = 69.9 J/(mol•K) S°(C3H8(g)) = 269.9 J/(mol•K)

answered Jan 23 in Chemical thermodynamics

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Calculate the bond length between two hydrogen atoms that form a H2 molecule given that the bond energy is 436 kJ/mol and the force constant is 434 N/m.

answered Jan 23 in Chemical bonding

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Calculate the activation energy for the electrochemical reaction of zinc and copper sulfate solution using the slope of the Tafel plot obtained from the data collected during a cyclic voltammetry experiment.

answered Jan 23 in ElectroChemistry

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What is a morpheme?

answered Jan 20 in Psychology

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What is generalisability in relation to theories?

answered Jan 20 in Psychology

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When can the use of positive reinforcement be effective?

answered Jan 20 in Psychology

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What are the main criteria used in theory evaluation?

answered Jan 16 in Psychology

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How has gender schema theory contributed to the field of psychology?

answered Jan 16 in Psychology

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When evaluating theories in existential psychology, what is the importance of considering the cultural relevance?

answered Jan 16 in Psychology

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What is the difference between a feedforward neural network and a recurrent neural network?

answered Jan 16 in Psychology

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46 views

According to the Ecological Validity Framework, what is the importance of ecological validity in research?

answered Jan 15 in Psychology

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81 views

What is the Dunbar number?

answered Jan 15 in Psychology

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