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What is the most efficient catalyst to use in the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol, and how does varying the amount of catalyst affect the yield and quality of the final product?
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Feb 21
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Chemical synthesis
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What is the most effective way to inhibit the interaction between two specific proteins using molecular docking studies?
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Computational Chemistry
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What is the optimal reaction conditions (temperature, pressure, solvent, acid/base catalysis) for the synthesis of high molecular weight polyvinylpyrrolidone using vinylpyrrolidone as the monomer?
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Feb 21
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Chemical synthesis
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MarcyWoolery
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What is the most effective catalyst to use in the production of biofuels from waste vegetable oil using the catalytic cracking process, and how does the concentration of the catalyst affect the yield and quality of the resulting biofuel?
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Feb 21
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Chemical engineering
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How does the orientation and arrangement of atoms in a molecule affect its electrical conductivity and charge transport properties in nanoscale systems, and how can this be studied using quantum transport models?
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Feb 22
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Quantum Chemistry
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What is the mechanism of the nucleophilic substitution reaction between 2-bromopropane and potassium hydroxide in ethanol as the solvent?
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Feb 21
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Organic Chemistry
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What is the mechanism of a nucleophilic substitution reaction between 1-bromobutane and sodium hydroxide in ethanol solvent? Provide the balanced chemical equation and draw the reaction mechanism, indicating the intermediates and the transition state.
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Feb 21
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Organic Chemistry
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What is the most suitable polymer-based biomaterial for developing a tissue-engineered scaffold for articular cartilage repair, and why?
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Feb 21
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Polymer Chemistry
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What is the effect of changing the pH of a colloidal solution on its zeta potential and stability?
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Feb 22
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Surface Chemistry
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What are the resonance structures of nitrate ion (NO3-) and how can they be identified using formal charges and electron-dot structures?
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Feb 21
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Chemical bonding
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What is the optimal temperature and time required for the synthesis of highly stable CdSe quantum dots using the colloidal method, and how do these parameters affect the size and properties of the quantum dots synthesized?
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Feb 22
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Materials Chemistry
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What is the optimal composition of a metal alloy for use in the construction of a high-temperature turbine blade for aerospace applications, and what properties of the alloy are responsible for its superior performance under these conditions?
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Feb 21
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Materials Chemistry
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What is the most probable distribution of energy among particles in a gas that has a constant temperature and volume? Provide an explanation for your answer using the concepts of statistical mechanics and thermodynamic ensembles.
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Feb 21
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Physical Chemistry
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What is the predicted geometry and polarity of the inorganic molecule XeF4?
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Feb 22
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Inorganic Chemistry
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What are the resonance structures of the nitrate ion (NO3-)? Show how the electrons are delocalized among the oxygen atoms in the molecule.
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Feb 21
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Chemical bonding
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SvenJonathan
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What is the optimal ratio of salicylic acid and acetic anhydride to produce the highest yield of aspirin in the synthesis process?
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Feb 21
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Chemical synthesis
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What is the most efficient method for synthesizing polyethylene terephthalate from terephthalic acid and ethylene glycol while ensuring high 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 effect of nanoparticle size on their optical properties? Specifically, how does changing the size of silver nanoparticles affect their absorption and scattering of light in the visible spectrum?
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Feb 21
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Physical Chemistry
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What is the most efficient method for synthesizing a new adhesive that meets both high strength and low toxicity standards in chemical engineering?
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Feb 21
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Chemical engineering
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What is the most efficient and cost-effective method to synthesize polypropylene from propylene monomer?
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Feb 21
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Chemical synthesis
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