Recent activity by DannieGuf001

1 answer 12 views

What is the effect of concentration and duration of exposure of a photosensitizer on the rate of photochemical reactions?

answered 3 days ago in PhotoChemistry

1 answer 19 views

How does the presence of a magnetic field affect the energy levels and resulting magnetic properties of a molecule, specifically in relation to the calculated values of magnetic susceptibility and nuclear magnetic resonance parameters?

answered 3 days ago in Quantum Chemistry

1 answer 18 views

What is the optimum wavelength range for sunscreen agents to be effective in protecting the skin from UV radiation?

answered 3 days ago in PhotoChemistry

1 answer 20 views

What is the ideal molar ratio of adipic acid to hexamethylenediamine needed for the synthesis of nylon-6,6 with the highest possible yield and quality?

asked 5 days ago in Chemical synthesis

1 answer 13 views

What is the heat of sublimation for dry ice (solid carbon dioxide) given that its enthalpy of fusion is 9.2 kJ/mol and its enthalpy of vaporization is 25.1 kJ/mol?

asked 5 days ago in ThermoChemistry

1 answer 17 views

What is the detailed mechanism of the electrophilic aromatic substitution reaction of nitration using nitric acid and sulfuric acid as the reagents on benzene?

answered 5 days ago in Organic Chemistry

1 answer 17 views

What is the effect of temperature on the rate of the reaction between magnesium and hydrochloric acid, and how does it relate to the Arrhenius equation?

answered 5 days ago in Chemical kinetics

1 answer 17 views

What is the effect of substrate roughness on the adhesion strength of a polymer coating?

asked 5 days ago in Polymer Chemistry

1 answer 16 views

What is the coordination number of the Eu(III) ion in the complex [Eu(NO3)3(H2O)9]? Explain the factors that determine the coordination number of lanthanide ions in coordination complexes.

asked 6 days ago in Coordination Chemistry

1 answer 21 views

What is the coordination geometry of the metal ion in the active site of hemoglobin, and how does this geometry enable the binding and release of oxygen molecules?

answered 6 days ago in Coordination Chemistry

1 answer 23 views

How does the coordination chemistry of metalloproteins and metalloenzymes influence their functionality in biological systems?

asked 6 days ago in Coordination Chemistry

1 answer 25 views

How does the composition of glasses affect their refractive index and dispersion, and how can this knowledge be applied to develop glasses with specific optical properties for use in applications such as lenses, fiber optics, and display technology?

asked 6 days ago in Materials Chemistry

1 answer 24 views

How does the choice of adhesive or coating affect the surface properties of a material, and how can these properties be optimized for specific applications?

asked 6 days ago in Surface Chemistry

1 answer 35 views

What factors determine the bond strength of a molecule and how can we predict its bond strength using those factors? Give an example of a molecule with a weak bond and a molecule with a strong bond, and explain why their bond strengths differ.

asked Feb 18 in Chemical bonding

1 answer 28 views

What is the balanced chemical equation for the combustion of ethane (C2H6) in the presence of oxygen (O2) to produce carbon dioxide (CO2) and water (H2O)?

asked Feb 17 in Chemical reactions

1 answer 9 views

How do specific amino acid residues affect the stability of DNA-protein complexes? Provide experimental evidence using in vitro assays.

asked Feb 14 in BioChemistry

1 answer 27 views

How can you determine the equilibrium constant for a reaction involving a weak oxidizing or reducing agent using a potentiometric titration?

answered Feb 14 in Chemical equilibrium

1 answer 34 views

How does the molecular geometry of a molecule impact its electronic structure, and how can this be calculated using molecular orbital theory?

asked Feb 13 in Quantum Chemistry

1 answer 37 views

How does inadequate training of chemistry teachers affect student understanding and performance in chemistry courses?

answered Feb 13 in Chemical education

1 answer 40 views

What is the effect of inhibitor concentration on the reaction rate of the enzyme catalyzed reaction and how can it be described by Michaelis-Menten kinetics?

asked Feb 13 in BioChemistry

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