Recent activity by HildredU3922

1 answer 31 views

How does the size and shape of microplastics affect their toxicity levels to marine organisms, and what chemical reactions or processes occur when these microplastics accumulate in the marine food chain?

asked Feb 24 in Environmental Chemistry

1 answer 52 views

What is the equilibrium constant for the reaction between iodine and thiosulfate ions in the presence of hydrochloric acid?

answered Feb 22 in Chemical equilibrium

1 answer 24 views

How do the physicochemical properties of ionic liquids such as viscosity, density, and conductivity vary with changes in temperature and chemical composition?

asked Feb 22 in Physical Chemistry

1 answer 30 views

What is the most effective method for studying the structural and electronic properties of zeolite catalysts using computational chemistry techniques?

asked Feb 21 in Computational Chemistry

1 answer 28 views

What is the most effective catalyst for synthesizing polyvinyl alcohol from vinyl acetate monomer, and how does the reaction conditions affect the properties of the resulting polyvinyl alcohol polymer?

asked Feb 21 in Chemical synthesis

1 answer 28 views

How does the geometry of zeolites affect their catalytic activity in the conversion of methanol to olefins? Use computational methods to investigate different zeolite structures and predict their catalytic performances.

answered Feb 20 in Computational Chemistry

1 answer 37 views

What is the effect of varying concentrations of hydroxyapatite nanoparticles on the mechanical properties of collagen-based biomaterials used in tissue engineering?

answered Feb 20 in Materials Chemistry

1 answer 27 views

How does the coordination chemistry of EDTA influence its ability to selectively chelate toxic metal ions in chelation therapy?

answered Feb 19 in Coordination Chemistry

1 answer 25 views

What is the balanced chemical equation for the reaction between hydrogen gas and oxygen gas to produce water?

answered Feb 17 in Chemical reactions

1 answer 33 views

What are the key factors that contribute to the stability of beta-sheet structures in protein folding, as revealed by molecular dynamics simulations?

asked Feb 13 in Computational Chemistry

1 answer 56 views

What type of bond is formed between two carbon atoms in a molecule of ethane (C2H6) and how is it determined?

asked Feb 13 in Chemical bonding

1 answer 32 views

How can we design a drug that specifically targets the enzyme responsible for a certain disease state, while avoiding interference with other enzymes or receptors in the body?

asked Feb 12 in Medicinal Chemistry

1 answer 71 views

How can the properties of graphene be modified to improve its suitability for electronic device applications, such as improving its conductivity or stability? Specifically, what chemical modifications, if any, can be made to the graphene structure to enhance its performance in electronic devices? How do these modifications affect the overall properties of graphene and its potential use in various electronic applications?

answered Feb 10 in Materials Chemistry

1 answer 65 views

How can the properties of a polymer-based smart material be optimized using different synthesis techniques and copolymerization strategies?

asked Feb 10 in Polymer Chemistry

1 answer 56 views

How can the performance of polymer-based membranes for water treatment be improved in terms of permeability and selectivity?

answered Feb 10 in Polymer Chemistry

1 answer 18 views

How can computational chemistry be used to study protein-protein interactions and lead to the discovery of potential inhibitors for disease-related interactions? Specifically, can molecular docking studies be used to predict the binding affinity and selectivity of a small molecule inhibitor to a protein-protein interface involved in a particular disease pathway?

asked Feb 6 in Computational Chemistry

1 answer 78 views

Calculate the enthalpy change of the isomerization of but-2-ene to 2-methylpropene given the standard enthalpy of formation of but-2-ene is -20.4 kJ/mol and that of 2-methylpropene is -27.0 kJ/mol. The reaction is carried out at constant pressure and 298 K.

asked Jan 23 in ThermoChemistry

1 answer 73 views

Calculate the bond energy of O2 molecule in kJ/mol, given that the bond energy of O-H is 464 kJ/mol and the bond energy of H-H is 432 kJ/mol.

asked Jan 23 in Chemical reactions

1 answer 84 views

A student conducted an electrochemical reaction using a copper electrode to reduce a solution containing Ag+ ions. The standard reduction potential for Ag+ is 0.80 V and the standard reduction potential for Cu2+ is 0.34 V. The student measured the cell potential to be 0.62 V. Calculate the overpotential of the reaction and determine if the reduction of Ag+ occurs spontaneously.

asked Jan 22 in ElectroChemistry

1 answer 84 views

A chemistry student wants to determine the reaction rate of a chemical reaction. They mix 8 grams of reactant A with 12 grams of reactant B in a beaker at room temperature. After 10 seconds, they observe that the mass of the beaker's contents has decreased by 2 grams. What is the reaction rate of the chemical reaction?

asked Jan 22 in Chemical reactions

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