Recent activity by AltonDurden

1 answer 25 views

How does the production of solar panels impact the environment in terms of resource usage, waste generation, and energy consumption compared to traditional fossil fuels?

asked Feb 22 in Environmental Chemistry

1 answer 33 views

What is the optimum reaction conditions for the synthesis of polyethylene from ethylene monomer and how do they affect the yield and properties of the polymer?

answered Feb 22 in Chemical synthesis

1 answer 31 views

How does the lipid composition of the cell membrane affect its permeability and selectivity for certain molecules?

answered Feb 20 in BioChemistry

1 answer 28 views

How does the presence of different concentrations of product affect the reaction rate of the iodine clock reaction?

answered Feb 20 in Chemical kinetics

1 answer 27 views

What is the effect of molecular weight on the viscosity of polymer melts? Provide experimental evidence and compare the results with existing theories.

answered Feb 19 in Polymer Chemistry

1 answer 28 views

What is the coordination number of Gd3+ ion in GdCl3 and how does its coordination environment change when it forms a complex with EDTA ligand?

asked Feb 19 in Coordination Chemistry

1 answer 28 views

How does the coordination chemistry of metal ions in metalloenzymes and metalloproteins impact their catalytic activity?

answered Feb 19 in Coordination Chemistry

1 answer 29 views

How does the concept of orbital overlap explain the strength of covalent bonds in different molecules?

answered Feb 19 in Physical Chemistry

1 answer 44 views

How does the catalyst's metal surface composition and structure affect the selectivity and efficiency of the oxidation of which type of hydrocarbon?

answered Feb 18 in Surface Chemistry

1 answer 31 views

What is the effect of different nanoparticle shapes on the enhancement of Raman signals in SERS?

answered Feb 17 in Surface Chemistry

1 answer 60 views

How do persistent organic pollutants (POPs) accumulate in the food chain and what are the potential health and environmental impacts of their accumulation?

answered Feb 14 in Environmental Chemistry

1 answer 41 views

What is the role of molecular chaperones in protein folding? How do they assist proteins in achieving their correct conformation?

answered Feb 13 in BioChemistry

1 answer 66 views

How do the chemical properties of liquid crystal molecules affect their ability to align and produce a desired optical effect in display technology?

asked Feb 13 in Materials Chemistry

1 answer 63 views

How does the chemical composition of landfill leachate affect the quality of groundwater in the surrounding areas?

asked Feb 13 in Environmental Chemistry

1 answer 70 views

What type of bonding is present in a diamond crystal? ionic, covalent, or metallic? Provide a brief explanation for your answer.

asked Feb 13 in Chemical bonding

1 answer 75 views

How can the synthesis and characterization of new materials be optimized for effective drug delivery and sustained release?

asked Feb 11 in Materials Chemistry

1 answer 32 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 5 in Computational Chemistry

1 answer 63 views

Design a lubricant production system that can produce 1000 liters of lubricant per hour for use in heavy machinery. The system should be cost-effective, environmentally friendly, and able to meet industry standards for quality and performance. Include a detailed process flow diagram and a list of the necessary raw materials, equipment, and safety precautions for the production process. Additionally, calculate the total production cost per liter of lubricant and propose strategies for reducing production costs without compromising product quality.

answered Feb 4 in Chemical engineering

1 answer 68 views

Design a counter-current heat exchanger to cool 10,000 liters per hour of cyclohexane at 110°C down to 50°C, while heating 7,500 liters per hour of water at 25°C up to 80°C. The cyclohexane will be cooled by water which enters the heat exchanger at 90°C and exits at 60°C. The overall heat transfer coefficient is expected to be 1,000 W/m2K. Determine the required heat transfer area and the pressure drop across the heat exchanger.

asked Feb 3 in Chemical engineering

1 answer 42 views

Calculate the standard enthalpy change of the dissolution reaction for 5.00 g of NaOH in 100 mL of water, given the molar heat of solution of NaOH as -44.5 kJ/mol.

answered Feb 3 in Chemical thermodynamics

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