Recent activity by QNZGertie668

1 answer 18 views

How does the size and shape of microplastics affect their toxicity and accumulation in marine organisms?

answered 2 days ago in Environmental Chemistry

1 answer 27 views

How does changing the pH of the solution affect the equilibrium position of the redox reaction between Fe3+ and I- ions? Provide a detailed explanation of the relationship between pH and equilibrium constant for this reaction.

answered 2 days ago in Chemical equilibrium

1 answer 28 views

What is the preferred method for synthesis of symmetrical ethers using alcohols and acids, and what are some limitations and drawbacks of this method?

answered 5 days ago in Organic Chemistry

1 answer 24 views

How does the prediction of electronic and magnetic properties of topological materials using quantum chemistry aid in the design and development of advanced electronic devices with improved performance and efficiency?

answered 5 days ago in Quantum Chemistry

1 answer 26 views

How do the photochemical properties of supramolecular assemblies vary with the change in the size and geometry of the assembly components? Provide a detailed analysis based on experimental evidence.

asked 5 days ago in PhotoChemistry

1 answer 22 views

What is the effect of the molecular weight of a polymer on the electrical conductivity of a polymer-based electronic material?

asked 6 days ago in Polymer Chemistry

1 answer 7 views

How does the metabolic pathway differ between healthy and diseased cells, and how can metabolomics and systems biology be used to identify biomarkers for disease diagnosis and treatment?

asked 6 days ago in BioChemistry

1 answer 22 views

What is the mechanism of the hydrogenation of ethyne to ethane using a palladium catalyst?

answered 6 days ago in Organic Chemistry

1 answer 36 views

What is the mechanism of synthesis of pyridine via the Hantzsch pyridine synthesis method, and how does the addition of a catalytic amount of iodine to the reaction mixture impact the yield and purity of the product?

asked Feb 20 in Organic Chemistry

1 answer 22 views

What is the effect of light intensity on the rate of reaction between potassium permanganate and oxalic acid?

asked Feb 19 in Chemical kinetics

1 answer 21 views

What is the critical micelle concentration of sodium dodecyl sulfate (SDS) in water at 25°C and how does it change with temperature?

answered Feb 19 in Surface Chemistry

1 answer 25 views

What is the equilibrium constant for the reaction between nitrogen gas and hydrogen gas to form ammonia gas at 500°C given that the equilibrium concentrations are [N2] = 0.25 M, [H2] = 0.20 M and [NH3] = 0.10 M?

answered Feb 17 in Chemical equilibrium

1 answer 26 views

How does the surface chemistry affect the intensity of SERS peak in the detection of chemical substances?

asked Feb 17 in Surface Chemistry

1 answer 29 views

Which photosensitive materials have the highest quantum yields for photochemical processes important in photography, and how do these yields impact the efficiency and quality of photographic images produced?

asked Feb 14 in PhotoChemistry

1 answer 33 views

How can the use of fertilizers in sustainable agriculture be optimized to minimize environmental impact while still maintaining crop yield?

asked Feb 14 in Environmental Chemistry

1 answer 45 views

How does eutrophication lead to the formation of harmful algal blooms, and what chemical compounds are responsible for their toxic effects on aquatic organisms?

asked Feb 13 in Environmental Chemistry

1 answer 50 views

What is the effect of doping nitrogen onto the electronic and optical properties of graphene and other 2D materials and how can it be accurately calculated using quantum chemistry methods?

asked Feb 12 in Quantum Chemistry

1 answer 34 views

How can the compatibility of two different polymers be improved in a blend to enhance their overall properties?

asked Feb 6 in Polymer Chemistry

1 answer 33 views

How can the chemical structure of existing cardiovascular drugs be modified to improve their efficacy and reduce their side effects?

answered Feb 6 in Medicinal Chemistry

1 answer 68 views

Design a distillation column that can effectively separate a mixture of ethanol and water with a composition of 60% ethanol and 40% water. The distillation column should have a reflux ratio of 1.5 and a total of 10 theoretical stages. Determine the operating conditions (temperature, pressure, and feed rate) needed to achieve a distillate product with a composition of 95% ethanol and a bottoms product with a composition of 5% ethanol.

asked Feb 3 in Chemical engineering

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