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What is the optimal ratio of diisocyanate and polyol for synthesizing polyurethane with the maximum mechanical strength and thermal stability?

asked Feb 21 in Chemical synthesis by RandellBeggs (2.0k points)

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How do the photochemical properties of fluorescent dyes influence their applications in biological imaging? Provide specific examples of fluorescent dyes and their uses in imaging techniques such as fluorescence microscopy and flow cytometry.

asked Feb 22 in PhotoChemistry by OrvalLasley3 (2.1k points)

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What is the impact of reactant orientation on the rate of reaction between substance A and substance B in the presence of a catalyst? How does this impact vary with changes in temperature and concentration of reactants?

asked Feb 22 in Chemical kinetics by ChasityLearm (2.1k points)

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What is the optimal reaction conditions to maximize the yield of polyethylene in the synthesis of polyethylene from ethylene monomer?

asked Feb 21 in Chemical synthesis by WallaceMaria (2.4k points)

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What is the net ATP production per molecule of glucose during the Citric acid cycle and oxidative phosphorylation in human cells? Provide a detailed explanation of the energy conversion steps that lead to ATP production in these metabolic pathways.

asked Feb 21 in BioChemistry by PeteWirtz263 (2.1k points)

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What is the mechanism behind the photo-induced isomerization of [Ru(bpy)3]2+ (tris(bipyridine)ruthenium(II)) and why does the process occur rapidly in solution but slowly in solid state?

asked Feb 22 in Quantum Chemistry by RobertoLafla (2.1k points)

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What is the pH of a solution if the pH meter reading is 3.7?

asked Feb 22 in Analytical Chemistry by OliveMatthae (2.1k points)

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How does the particle size of nanomaterials affect their catalytic properties?

asked Feb 22 in Materials Chemistry by MacDeLoitte (1.8k points)

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1 answer 80 views

How does the particle size of nanomaterials affect their catalytic activity in a specific reaction, and what is the optimal size range for maximum efficiency?

asked Feb 22 in Materials Chemistry by TroyWitcher8 (2.1k points)

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What is the optimized temperature and reaction conditions for the synthesis of polystyrene from styrene monomers using free radical polymerization?

asked Feb 22 in Chemical synthesis by ArleneLeichh (2.1k points)

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How does the pH of a reaction mixture affect the reaction rate of the acid-catalyzed hydrolysis of sucrose?

asked Feb 22 in Chemical kinetics by RaulGalway75 (2.1k points)

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What is the most suitable polymer-based biomaterial for developing a tissue-engineered scaffold for articular cartilage repair, and why?

asked Feb 21 in Polymer Chemistry by TawannaHaine (2.3k points)

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What are the optimal reaction conditions for synthesizing polyurethane from diisocyanate and polyol, such that a high molecular weight and desirable material properties are achieved?

asked Feb 21 in Chemical synthesis by DaisyThwaite (1.9k points)

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What is the optimized conditions for synthesizing polyvinylpyrrolidone from vinylpyrrolidone monomer in terms of temperature, solvent, reaction time, and catalyst concentration?

asked Feb 22 in Chemical synthesis by RosieBloom03 (1.8k points)

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How does the photochemical behavior of transition metal complexes vary with respect to their coordination geometry? Provide examples of different coordination geometries and their corresponding photochemical properties.

asked Feb 22 in PhotoChemistry by SelinaOmar8 (2.0k points)

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What is the optimum temperature and concentration of nitric acid necessary for the most efficient and safe preparation of 2,4,6-trinitrotoluene from toluene using the nitration process?

asked Feb 21 in Chemical synthesis by DaisyThwaite (1.9k points)

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1 answer 73 views

How do the photochemical properties of supramolecular assemblies change in the presence of different binding motifs and ligands?

asked Feb 22 in PhotoChemistry by BrentAshcrof (1.5k points)

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How does the particle size of a colloidal solution affect its color intensity and stability?

asked Feb 22 in Physical Chemistry by OtisBrumbaug (1.8k points)

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What is the optimal reaction conditions and catalyst for the synthesis of high molecular weight polystyrene with a desired molecular weight range of 100,000-500,000 g/mol from styrene monomer?

asked Feb 21 in Chemical synthesis by CaraPrerauer (1.6k points)

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What is the optimal thickness and arrangement of graphene layers for high-performance electronic devices such as transistors?

asked Feb 22 in Materials Chemistry by KelleS495456 (1.9k points)

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