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How can we accurately calculate the absorption and emission spectra of a given molecule using quantum chemistry methods, and what factors influence these properties?

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

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How does the use of synthetic nitrogen fertilizers in sustainable agriculture impact greenhouse gas emissions and contribute to climate change?

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

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What is the step-by-step procedure for synthesizing a coordination compound using ligand substitution method and how can we characterize the compound using various instrumental techniques such as UV-Vis spectroscopy and NMR spectroscopy?

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

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What is the enthalpy change for the reaction 2CuO(s) + C(s) → 2Cu(s) + CO2(g) if the enthalpy of formation for CuO(s) is -159.2 kJ/mol, the enthalpy of formation for CO2(g) is -393.5 kJ/mol, and the standard enthalpy of formation for Cu(s) is 0?

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

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What is the VSEPR geometry of a molecule that has four bonding pairs and no lone pairs?

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

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What spectroscopic techniques can be used to study the coordination geometry and bonding of transition metal complexes? Provide specific examples and discuss the advantages and limitations of each technique.

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

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What is the bond energy of O-H bond in the water molecule (H2O)? Show the complete calculation with the given bond dissociation energy of H-O bond and H-H bond.

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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How does the zeta potential of a colloidal solution change as pH is varied from acidic to alkaline conditions and how does this affect the stability of the colloidal system?

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

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What is the standard enthalpy change for the neutralization of 50mL of 1M HCl solution with 50mL of 1M NaOH solution at 25°C?

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the relation between zeta potential and stability of colloidal systems? Provide examples of how changes in zeta potential can affect the stability of colloidal systems in different industrial and biological applications.

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

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How can the use of polymer-based drug delivery systems be optimized for efficient and targeted drug delivery?

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

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What are the factors that affect the rate of electron transfer in redox reactions and how do they impact the overall reaction mechanism?

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

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Sure, here's a possible precise question: How does the type of chemical bonding affect the properties of a substance, and how can we predict the molecular structure of a chemical based on its bonding type and electron configuration?

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

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What is the effect of temperature on the viscosity of ionic liquids?

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

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What is the optimal temperature and concentration of catalyst needed for the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol to achieve the highest yield and desired properties?

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

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What is the corrosion potential of a galvanic couple composed of a Zn metal and a Cu metal in a 1 M Cu2+ solution at 298 K when the Zn electrode is at -0.76 V and the Cu electrode is at +0.34 V?

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

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What is the unit cell of sodium chloride crystal?

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

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What is the amount of heat needed to melt 25 grams of ice at its melting point if its enthalpy of fusion is 6.02 kJ/mol?

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

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How can the understanding of the mechanism of action of nonsteroidal anti-inflammatory drugs (NSAIDs) be used to develop more effective treatments for inflammatory diseases with fewer side effects?

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

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How does the swelling behavior of polymer-based superabsorbent materials vary with changes in their chemical composition and synthetic conditions?

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

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