Recent activity by StefanieBret

1 answer 18 views

How does the size and shape of a gold nanoparticle affect its stability and reactivity in a molecular dynamics simulation?

asked 1 day ago in Computational Chemistry

1 answer 25 views

What conditions are necessary for the selective oxidation of methane on a metal surface to produce formaldehyde, and how does the presence of different metals affect the selectivity and activity of the reaction?

answered 1 day ago in Surface Chemistry

1 answer 24 views

How does the selective oxidation of hydrocarbons on metal surfaces vary with changes in the surface structure and composition?

answered 1 day ago in Surface Chemistry

1 answer 27 views

What is the optimum temperature and ratio of reactants needed to achieve maximum yield in the synthesis of polyacrylonitrile from acrylonitrile monomer using free-radical polymerization?

answered 4 days ago in Chemical synthesis

1 answer 26 views

How does the molecular weight of a polymer affect its physical properties such as viscosity, tensile strength, and elasticity?

answered 4 days ago in Physical Chemistry

1 answer 20 views

What is the maximum work that can be obtained from the irreversible expansion of an ideal gas at constant temperature and pressure?

answered 5 days ago in Physical Chemistry

1 answer 23 views

What is the maximum adsorption capacity of nitrogen gas on a certain adsorbent material at a temperature of 25°C and a pressure of 5 atm, based on the Langmuir adsorption isotherm with a constant K of 0.2 L/mol?

asked 5 days ago in Surface Chemistry

1 answer 20 views

What is the impact of pH and heavy metal concentrations in landfill leachate on groundwater quality and how can the leachate be treated using chemical methods to reduce these impacts?

answered 5 days ago in Environmental Chemistry

1 answer 19 views

What is the effect of nanoparticle size on the mechanical properties of polymer nanocomposites?

asked 6 days ago in Polymer Chemistry

1 answer 26 views

How does the chemical composition and structure of polymer-based packaging materials affect their biodegradability and environmental impact?

asked Feb 18 in Polymer Chemistry

1 answer 24 views

How does the behavior of a polymer system change as the concentration of solvent molecules is varied using Monte Carlo simulations?

answered Feb 17 in Computational Chemistry

1 answer 24 views

What is the balanced chemical equation for the neutralization reaction between hydrochloric acid and sodium hydroxide?

asked Feb 17 in Chemical reactions

1 answer 20 views

How does the adsorption energy of a nitrogen molecule on the surface of a metal catalyst change with the addition of a small amount of a second metal dopant, as predicted by density functional theory calculations?

answered Feb 17 in Computational Chemistry

1 answer 42 views

What are the hybrid orbitals in the molecule CH4 and how do they contribute to the overall structure and bonding of the molecule?

answered Feb 13 in Chemical bonding

1 answer 36 views

What is the oxidation state of sulfur in the compound Na2SO4?

asked Feb 13 in ElectroChemistry

1 answer 45 views

What is the hybridization of the central atom in the molecule SF6 (sulfur hexafluoride)?

asked Feb 13 in Inorganic Chemistry

1 answer 38 views

What is the role of hydrogen bonding in maintaining the stability of the double helix structure of DNA? How does the chemical structure of nucleotide bases allow for complementary base pairing and formation of base pairs?

answered Feb 13 in BioChemistry

1 answer 36 views

How effective are environmental regulations in preventing or reducing pollution of water bodies in the United States?

asked Feb 13 in Environmental Chemistry

1 answer 35 views

How do chaperones aid in the folding process of proteins and what are the consequences of misfolded proteins in the human body?

asked Feb 12 in BioChemistry

1 answer 32 views

How can the concept of pH be applied to real-world scenarios such as understanding the acidity levels of common food and drinks and their effects on tooth decay?

answered Feb 6 in Chemical education

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