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What effect does the nature of the ligand have on the light absorption properties of a coordination compound?
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Feb 21
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PhotoChemistry
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What is the optimal reaction conditions, including temperature, pressure, and catalyst selection, for the synthesis of polyethylene oxide with a targeted molecular weight using ethylene oxide as the monomer?
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Feb 21
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Chemical synthesis
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What is the mechanism of passivation of stainless steel and how does it protect against corrosion?
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Feb 22
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Surface Chemistry
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How do the photochemical properties of supramolecular assemblies differ from those of individual molecules, and how can these differences be utilized in designing more efficient light harvesting systems for solar energy conversion?
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PhotoChemistry
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What is the optimal molar ratio of phenol to nitric acid for the preparation of 2,4-dinitrophenol, and how does changing this ratio affect the yield and purity of the final product?
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Feb 21
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Chemical synthesis
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What is the optimal molar ratio of adipic acid to hexamethylenediamine for the synthesis of nylon-6,6 with the highest yield and purity?
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Feb 21
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Chemical synthesis
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TraciCoomes1
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What are the optimized reaction conditions for the synthesis of polypropylene from propylene monomer, and how do they affect the yield and quality of the resulting polymer?
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Feb 22
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Chemical synthesis
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CharleneLemu
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What is the optimal reaction conditions (temperature, pressure, time, and catalyst) required for the efficient synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol?
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Feb 21
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Chemical synthesis
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What is the mechanism behind the photochemical degradation of the pesticide chlorpyrifos in water solution? How does the process change with different wavelengths of light?
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Feb 22
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Physical Chemistry
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MervinBowden
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What is the most effective synthesis route for producing a biodegradable polymer with adjustable properties such as molecular weight, mechanical strength, and degradation rate, using environmentally friendly and cost-efficient raw materials?
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Feb 21
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Polymer Chemistry
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How does the polarity of the solvent affect the rate of a photochemical reaction between a specific chromophore and the solvent?
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Feb 22
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PhotoChemistry
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How do the photochemical properties of different photovoltaic materials affect their efficiency in converting solar energy into electrical energy?
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Feb 22
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PhotoChemistry
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What is the polarity of the H-Cl bond in HCl molecule?
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Feb 22
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Chemical bonding
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What is the optimal wavelength range for sunscreen agents to effectively absorb UV radiation, and how does this correlate with the effectiveness of the sunscreen in preventing skin damage from sun exposure?
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Feb 22
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PhotoChemistry
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How does the pH level of water affect the survival and growth of aquatic organisms in polluted waters?
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Feb 22
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Environmental Chemistry
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How do the photochemical properties of quantum dots differ from traditional bulk semiconductors, and what makes them a promising candidate for applications in fields such as solar cells, medical imaging, and quantum computing?
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Feb 22
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PhotoChemistry
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How does pH affect the zeta potential in a colloidal system?
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Feb 22
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Surface Chemistry
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What is the reaction mechanism for the formation of a carboxylic acid from an alcohol using oxidation with potassium permanganate?
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Feb 22
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Organic Chemistry
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What is the mechanism for the preparation of 2-chloro-4-nitroaniline from aniline and chlorine gas, and what parameters (such as temperature and pressure) are crucial for the success of the reaction?
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Feb 22
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Chemical synthesis
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What is the optimum reaction temperature and pressure for the synthesis of polypropylene from propylene monomer using Ziegler-Natta catalyst?
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Feb 22
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Chemical synthesis
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