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What is the VSEPR geometry of a molecule that has a central atom with four surrounding atoms and no lone pairs of electrons?

asked Feb 28 in Chemical bonding by TheScientist (138k points)

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How can the use of biomass as a renewable energy source impact water quality in nearby ecosystems?

asked Feb 28 in Environmental Chemistry by TheScientist (138k points)

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How does the type of ligand affect the formation and stability of coordination complexes of transition metal ions?

asked Feb 28 in Coordination Chemistry by TheScientist (138k points)

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How can the use of specific technologies and best practice guidelines reduce the negative impact of industrial waste disposal on the environment?

asked Feb 28 in Environmental Chemistry by TheScientist (138k points)

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What are the specific chemical characteristics and properties that make a molecule effective in treating cardiovascular diseases?

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How does the urea cycle convert toxic ammonia into a less toxic form and what enzymes are involved in the process?

asked Feb 28 in BioChemistry by TheScientist (138k points)

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How does the type of host-guest interaction affect the self-assembly of supramolecular structures in aqueous solutions? Provide experimental evidence to support your answer.

asked Feb 28 in Physical Chemistry by TheScientist (138k points)

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What is the relationship between zeta potential and the stability of colloidal systems? Investigate this relationship by measuring the zeta potential of various colloidal systems and observing their stability over time.

asked Feb 28 in Surface Chemistry by TheScientist (138k points)

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What is the optimal temperature and pressure conditions required for the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol in order to achieve the highest yield and molecular weight of the resultant polymer?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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How does the molar mass and size of the anion affect the viscosity of ionic liquids?

asked Feb 28 in Physical Chemistry by TheScientist (138k points)

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How can the synthesis of zeolites be optimized and improved by modifying the reaction conditions such as temperature, pressure, and reactant concentrations?

asked Feb 28 in Materials Chemistry by TheScientist (138k points)

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What is the enthalpy change for the combustion of 1 mole of methane gas (CH4) at standard conditions, given that the enthalpies of formation for methane, carbon dioxide, and water are -74.8 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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How does the toxicity of existing drugs vary with changes in functional groups and their structural properties?

asked Feb 28 in Medicinal Chemistry by TheScientist (138k points)

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How can the synthesis of pyridine be optimized using microwave heating? What are the advantages of this technique over traditional heating methods?

asked Feb 28 in Organic Chemistry by TheScientist (138k points)

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How does the zeta potential value of a colloidal system change with respect to changes in pH and ionic strength, and what are the underlying mechanisms responsible for such changes?

asked Mar 1 in Surface Chemistry by TheScientist (138k points)

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How does the temperature affect the conductivity of ionic liquids and what is the underlying mechanism behind it?

asked Feb 28 in Physical Chemistry by TheScientist (138k points)

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What is the effect of pH on the zeta potential of silica nanoparticles and how can it be measured experimentally?

asked Feb 28 in Surface Chemistry by TheScientist (138k points)

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What is the effect of pH on the zeta potential of silica nanoparticles and how can it be measured?

asked Feb 28 in Surface Chemistry by TheScientist (138k points)

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What is the specific reaction mechanism involved in the synthesis of polyethylene from ethylene monomer, and how does it affect the properties of the resulting polymer?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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How does the ubiquitin-proteasome system contribute to protein turnover and degradation in cells, and what are the underlying mechanisms and factors that regulate this process?

asked Feb 28 in BioChemistry by TheScientist (138k points)

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