Recent activity by ElissaSegura

1 answer 15 views

How does the size and shape of a quantum dot affect its photochemical properties, specifically the absorption and emission wavelengths?

answered 1 day ago in PhotoChemistry

1 answer 16 views

How does the rate of energy transfer between molecules depend on the molecular geometry and the relative orientation of the molecules in the system?

asked 3 days ago in Quantum Chemistry

1 answer 22 views

What is the step-by-step procedure for the preparation of 2,4-dichlorobenzoic acid from benzoic acid and chlorine gas using a suitable solvent and catalyst, and what is the yield obtained?

asked 3 days ago in Chemical synthesis

1 answer 23 views

What is the melting point of NaCl? Show your calculations and explain the factors that affect the melting point of this compound.

asked 5 days ago in Inorganic Chemistry

1 answer 24 views

What is the Lewis structure of the carbon dioxide (CO2) molecule and what is the hybridization of the central carbon atom?

answered 5 days ago in Chemical bonding

1 answer 23 views

What is the equilibrium constant expression for the following gas phase reaction at 25°C?N2(g) + 3H2(g) ⇌ 2NH3(g)Given the equilibrium concentrations of N2, H2 and NH3, calculate the value of the equilibrium constant (Kc) for this reaction.

answered 5 days ago in Chemical equilibrium

1 answer 13 views

What is the effect of temperature on the surface tension of a solution containing a surfactant?

answered 6 days ago in Surface Chemistry

1 answer 21 views

What is the effect of light intensity on the fading of dyes and pigments under different conditions?

asked 6 days ago in PhotoChemistry

1 answer 29 views

What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) and how does it change with temperature and concentration of the solution?

answered 6 days ago in Surface Chemistry

1 answer 20 views

How does the coordination environment of the metal ion in hemoglobin affect its oxygen binding affinity?

asked 6 days ago in Coordination Chemistry

1 answer 31 views

How does the addition of antioxidants affect the degradation and stability of high-density polyethylene (HDPE) under various environmental conditions?

asked Feb 17 in Polymer Chemistry

1 answer 54 views

How does temperature affect the reaction rate of the reaction between sodium thiosulfate and hydrochloric acid, and how can this effect be quantitatively measured?

asked Feb 17 in Chemical kinetics

1 answer 33 views

How do different types of sunscreen agents (e.g. organic vs. inorganic) differ in their photochemical properties, and how do these properties affect their effectiveness at protecting against UV radiation?

asked Feb 14 in PhotoChemistry

1 answer 35 views

What is the mechanism of nucleophilic substitution reaction in halogenoalkanes? Explain the role of the nucleophile and the leaving group in the reaction. Provide an example of a nucleophilic substitution reaction and predict the product formed.

asked Feb 14 in Organic Chemistry

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?

answered Feb 13 in Quantum Chemistry

1 answer 32 views

What is the hybridization of the central atom in the compound CHCl3?

asked Feb 13 in Chemical bonding

1 answer 34 views

What type of intermolecular force is present in CH3OH (methanol)?

answered Feb 13 in Chemical bonding

1 answer 34 views

How to design and optimize a system for the recovery of valuable metals, such as gold and silver, from electronic waste using hydrometallurgical methods and incorporating green chemistry principles to minimize environmental impact?

answered Feb 12 in Chemical engineering

1 answer 9 views

How can we design a drug that specifically targets the serotonin transporter protein to treat depression?

asked Feb 12 in Medicinal Chemistry

1 answer 50 views

How can the rate of protein degradation and turnover be measured and monitored using biochemical assays and techniques in a laboratory setting?

answered Feb 10 in BioChemistry

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