Recent activity by KarolinBirds

1 answer 40 views

What is the rate constant of the reaction between hydrochloric acid and sodium thiosulfate?

1 answer 30 views

How do the photochemical properties of photovoltaic materials, such as absorbance spectra and charge carrier mobility, impact the efficiency of solar cells?

asked Feb 22 in PhotoChemistry

1 answer 31 views

What is the effect of pH on the zeta potential of colloidal particles, and how can this be measured using electrophoretic light scattering (ELS)?

answered Feb 22 in Surface Chemistry

1 answer 27 views

What is the optimal ratio of aniline to nitric acid needed to achieve the highest yield of p-nitroaniline in the preparation process?

asked Feb 21 in Chemical synthesis

1 answer 31 views

How does the degradation of polymers affect their stability over time? Specifically, investigate the effects of environmental factors, such as temperature, humidity, and UV exposure on the rate of degradation and stability of different types of polymers.

asked Feb 19 in Polymer Chemistry

1 answer 34 views

How does the choice of exchange-correlation functional affect the accuracy of predicting reaction energetics in density functional theory calculations of catalytic reactions?

answered Feb 18 in Computational Chemistry

1 answer 29 views

How does the active site of an enzyme interact with its substrate and what specific amino acid residues are involved in the catalytic mechanism for the hydrolysis of a peptide bond by the enzyme, chymotrypsin?

answered Feb 17 in BioChemistry

1 answer 70 views

What are the properties of liquid crystals that make them suitable for use in display technology? How do these properties affect the performance of liquid crystal displays?

asked Feb 13 in Materials Chemistry

1 answer 52 views

How does doping with other elements affect the superconducting properties of high-temperature superconductors?

answered Feb 12 in Materials Chemistry

1 answer 69 views

How can the synthesis of carbon nanotubes be improved to enhance their electrical conductivity and mechanical strength for use in high-performance electronics and nanocomposites?

answered Feb 11 in Materials Chemistry

1 answer 105 views

Calculate the standard enthalpy change (ΔH°), standard entropy change (ΔS°) and standard Gibbs free energy change (ΔG°) of the reaction:2A(g) + 3B(g) → C(g) + 2D(g)given thatΔH°f[A(g)] = 200 kJ mol^-1Δ H°f [B(g)] = 100 kJ mol^-1Δ H°f [C(g)] = 400 kJ mol^-1Δ H°f [D(g)] = 0 kJ mol^-1ΔH°= -400 kJ mol^-1Temperature (T) = 298 KThe student needs to use their knowledge in quantum chemistry and thermodynamics to calculate the thermodynamic properties of the given reaction.

answered Feb 3 in Quantum Chemistry

1 answer 136 views

What is the vibrational frequency and infrared spectrum of carbon dioxide molecule using the quantum mechanical approach and how does it compare to the experimental data?

answered Jan 31 in Quantum Chemistry

1 answer 61 views

How can capillary electrophoresis be used to analyze the composition of a protein sample?

asked Jan 29 in Analytical Chemistry

1 answer 73 views

Calculate the heat of hydration for the compound sodium sulfate (Na2SO4) given that 3 moles of water are released when 1 mole of the compound dissolves in water. The enthalpy of solution for sodium sulfate is -138 kJ/mol, and the enthalpy of hydration for water is -286 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 72 views

According to Bandura's social learning theory, how do individuals learn?

answered Jan 20 in Psychology

1 answer 61 views

According to the research on decision-making biases, what is the sunk cost fallacy?

answered Jan 20 in Psychology

1 answer 54 views

According to the social exchange theory, what is a key determinant of relationships?

asked Jan 20 in Psychology

1 answer 65 views

When was the first study of bystander intervention published?

answered Jan 20 in Psychology

1 answer 84 views

When can social learning theory be applied?

asked Jan 20 in Psychology

1 answer 204 views

What is the role of genetics in cognitive aging?

asked Jan 17 in Psychology

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