Recent activity by Tesha44V4191

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How do the size and shape of quantum dots affect their photochemical properties?

1 answer 17 views

What is the effect of varying the size and shape of nanomaterials on their catalytic activity for a specific chemical reaction?

asked 1 day ago in Materials Chemistry

1 answer 18 views

How does an increase in pressure affect the rate of the reaction between hydrogen gas and iodine vapor, given the chemical equation H2(g) + I2(g) ⇌ 2HI(g)?

answered 3 days ago in Chemical kinetics

1 answer 22 views

How does the presence of a heterogeneous catalyst affect the rate of a chemical reaction? Can you provide a detailed explanation of the surface chemistry and mechanisms involved in the catalysis process?

asked 3 days ago in Surface Chemistry

1 answer 17 views

What is the optimal ratio of diisocyanate and polyol required for the synthesis of polyurethane with desired mechanical and thermal properties?

answered 4 days ago in Chemical synthesis

1 answer 22 views

How do the mechanical properties of biodegradable polymer coatings affect the performance and lifespan of medical implants such as heart stents under various stress conditions?

answered 5 days ago in Materials Chemistry

1 answer 17 views

What is the major product formed when toluene reacts with Br2 in the presence of FeBr3 catalyst? Explain the reaction mechanism involved.

answered 5 days ago in Organic Chemistry

1 answer 25 views

What is the enthalpy of vaporization of water at 373K? Given the heat of formation of liquid water is -285.8 kJ/mol and the heat of formation of water vapor is -241.8 kJ/mol. The vapor pressure of water at the boiling point (373K) is 101.325 kPa.

answered 5 days ago in ThermoChemistry

1 answer 18 views

What is the effect of increasing the concentration of NaCl in a solution on the solubility of a sparingly soluble salt, such as AgCl? Show the calculations and explain the reasoning behind your answer.

answered 6 days ago in Chemical equilibrium

1 answer 21 views

How does the concentration of nitrogen and phosphorus affect the growth of algae in freshwater ecosystems and what chemical processes contribute to eutrophication when these nutrients are present in excess amounts?

asked Feb 19 in Environmental Chemistry

1 answer 26 views

What is the effect on the formation of the complex ion [Fe(H2O)6]3+ when the pH is changed from 2.0 to 3.5? Show calculations to support your answer.

asked Feb 18 in Chemical equilibrium

1 answer 23 views

What is the effect of the chemical structure on the phosphorescent properties of materials and which factors determine the efficiency of phosphorescence in these materials?

asked Feb 18 in PhotoChemistry

1 answer 35 views

What is the bond length between two oxygen atoms in a molecule of O2, given that the equilibrium bond distance of oxygen is 121 pm?

answered Feb 18 in Chemical bonding

1 answer 28 views

How does temperature affect the multilayer adsorption of gases onto solid surfaces predicted by the BET theory? Provide experimental evidence to support your answer.

answered Feb 17 in Surface Chemistry

1 answer 30 views

What are the electronic and magnetic properties of [Fe(H2O)6]2+ complex ion and how do they affect its reactivity towards ligands?

asked Feb 17 in Quantum Chemistry

1 answer 35 views

How does nitrogen fixation occur in bacteria and plants, and what are the biochemical pathways involved in the assimilation of nitrogen into amino acids in organisms?

asked Feb 14 in BioChemistry

1 answer 35 views

How can we use molecular docking studies to help identify potential drug candidates for inhibiting the activity of a specific enzyme involved in a disease pathway?

asked Feb 13 in Computational Chemistry

1 answer 44 views

How does the reaction rate of the chemical reaction (mention the reaction) in the presence of catalyst (mention the catalyst) vary with changes in pH (mention the pH range)?

asked Feb 13 in Chemical kinetics

1 answer 27 views

What conditions are needed for the catalytic polymerization of ethylene monomers in order to obtain high molecular weight polyethylene?

answered Feb 13 in Chemical synthesis

1 answer 47 views

How do different types of DNA-protein interactions affect the stability and flexibility of the DNA molecule, as observed through molecular dynamics simulations?

asked Feb 12 in Computational Chemistry

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