Recent activity by AdeleChauvel

1 answer 77 views

What is the role of the photostability and photoreactivity of sunscreen agents in preventing skin damage caused by UV radiation?

asked Feb 24 in PhotoChemistry

1 answer 68 views

What is the relationship between the chemical composition and the optical properties of glasses used in optical fiber communication systems?

asked Feb 24 in Materials Chemistry

1 answer 85 views

What factors affect the rate of the reaction between sodium thiosulfate and hydrochloric acid, and how do they influence the rate constant?

asked Feb 22 in Inorganic Chemistry

1 answer 74 views

What is the most efficient method of preparing 2-chloro-4-nitroaniline from aniline and chlorine gas? How can the purity of the final product be determined and what are the potential hazards associated with this synthesis?

answered Feb 21 in Chemical synthesis

1 answer 72 views

What are the molecular mechanisms behind the interactions between proteins in a complex and what role do the protein domains play in such interactions?

asked Feb 21 in BioChemistry

1 answer 79 views

What is the Faraday constant and how can it be calculated from the electrolysis of copper sulfate using a current of 2.5 amps for 2 hours?

answered Feb 20 in ElectroChemistry

1 answer 72 views

What are the most effective photochemical properties that determine the efficiency of a photovoltaic material, and how can they be optimized to increase the conversion rate of solar energy into electricity?

answered Feb 20 in PhotoChemistry

1 answer 145 views

What is the effect of increasing the concentration of the product on the reaction rate?

asked Feb 13 in Chemical kinetics

1 answer 78 views

What type of hybrid orbitals are present in the molecule of methane (CH4)?

asked Feb 13 in Chemical bonding

1 answer 125 views

What mass of sodium chloride (NaCl) would be produced from the reaction of 5.00 grams of sodium (Na) with an excess of chlorine (Cl2) gas, according to the following chemical equation: 2Na + Cl2 → 2NaCl

asked Feb 13 in Chemical reactions

1 answer 169 views

How does the concentration of phosphorus and nitrogen in a body of water affect the process of eutrophication, and what are the long-term effects of eutrophication on aquatic ecosystems?

asked Feb 13 in Environmental Chemistry

1 answer 91 views

What is the mechanism by which Chlorofluorocarbons (CFCs) contribute to the depletion of the ozone layer, and how does this impact the prevalence of skin cancer and other harmful effects on human health and the environment?

asked Feb 12 in Environmental Chemistry

1 answer 126 views

How can the synthesis of polypropylene from propylene monomer be optimized to increase the yield of high quality polymer?

answered Feb 11 in Chemical synthesis

1 answer 125 views

How can the synthesis and characterization of new materials for use in fuel cells be optimized to improve their performance in terms of efficiency and durability while reducing costs?

answered Feb 11 in Materials Chemistry

1 answer 74 views

How can the design of a lubricant production system be optimized to increase efficiency and reduce waste?

asked Feb 6 in Chemical engineering

1 answer 68 views

How can computational studies of supramolecular chemistry be used to design more efficient drug delivery systems?

answered Feb 5 in Computational Chemistry

1 answer 123 views

Design a chemical reactor system with a specific volume and flow rate for the production of 100 kg/hr of ammonia from hydrogen and nitrogen gases using the Haber-Bosch process. The reactor temperature should be maintained at 450°C and a pressure of 200 atm. The reactor should also have a 90% conversion rate of reactants to meet the required production rate. Determine the dimensions of the reactor and the amount of catalyst needed for this process.

answered Feb 3 in Chemical engineering

1 answer 132 views

Can you identify the differences in the photochemical properties of the enantiomers of a chiral molecule and explain how this affects their behavior in a photochemical reaction?

answered Feb 3 in PhotoChemistry

1 answer 132 views

What is the concentration of caffeine in a particular brand of coffee, using liquid chromatography as the primary analytical technique?

answered Jan 30 in Analytical Chemistry

1 answer 98 views

Where do top-down processing theories suggest perception occurs?

asked Jan 20 in Psychology

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