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How does the size and shape of nanomaterials affect their catalytic activity in various chemical reactions?

asked Feb 25 in Materials Chemistry by TheScientist (138k points)

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How does the size of nanomaterials affect their electronic and optical properties, and how can these properties be accurately calculated using quantum chemistry methods?

asked Feb 25 in Quantum Chemistry by TheScientist (138k points)

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What is the standard enthalpy change for the combustion of methane (CH4) at 298 K and 1 atm pressure, given that the reactants and products are in their standard states?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the specific metal center and coordination geometry of the active site in the metalloenzyme carbonic anhydrase, and how does this structure allow for the efficient catalysis of the hydration of carbon dioxide to bicarbonate?

asked Feb 25 in Coordination Chemistry by TheScientist (138k points)

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How does the specific arrangement of sugar molecules in carbohydrates affect their interaction with proteins and their recognition by the body's immune system?

asked Feb 25 in BioChemistry by TheScientist (138k points)

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What is the standard enthalpy of formation of butane (C4H10) at 298 K and 1 atm pressure?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change of vaporization of water at 373 K according to the following data:H2(g) + O2(g) → H2O(l) ΔH° = -285.8 kJ/molH2O(l) → H2O(g) ΔH° = +40.7 kJ/molNote: The answer should be in units of kJ/mol.

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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How does the specific arrangement of carbohydrate molecules on the surface of a protein affect its ability to recognize and bind to other molecules?

asked Feb 25 in BioChemistry by TheScientist (138k points)

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How does the strength of the non-covalent interaction between a cation and an anion in a salt bridge vary with the size of the ions, as calculated using quantum chemical methods?

asked Feb 25 in Computational Chemistry by TheScientist (138k points)

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What is the effect of the surface charge and size of colloidal particles on their stability and interactions with each other and the surrounding environment?

asked Feb 25 in Physical Chemistry by TheScientist (138k points)

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What is the source of nitrogen and phosphorus pollution in a specific water body and how does it affect the concentration of these nutrients?

asked Feb 25 in Environmental Chemistry by TheScientist (138k points)

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What are the factors affecting the size and shape of nanoparticles, and how can these properties be manipulated to enhance their catalytic activity?

asked Feb 25 in Physical Chemistry by TheScientist (138k points)

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How does the stability of inorganic compounds vary with their electronic configuration and oxidation state?

asked Feb 25 in Inorganic Chemistry by TheScientist (138k points)

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What is the solubility of sodium chloride (NaCl) in water at 25°C given that its solubility product constant (Ksp) is 36.8? How does the addition of other ionic solutes to the solution affect the solubility of NaCl? Demonstrate your answer mathematically.

asked Feb 25 in Physical Chemistry by TheScientist (138k points)

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How does the size and shape of nanoparticles affect their photochemical properties? Provide a detailed explanation using specific examples.

asked Feb 25 in PhotoChemistry by TheScientist (138k points)

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What is the standard enthalpy change for the phase transition reaction of water when it freezes at a temperature of -10°C and a pressure of 1 atm?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the neutralization reaction between hydrochloric acid and sodium hydroxide at 25℃? The reaction equation is HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l).

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the effect of temperature on the solubility of a solid in a liquid solvent?

asked Feb 25 in Physical Chemistry by TheScientist (138k points)

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How does the strength and specificity of noncovalent interactions, such as hydrogen bonding and π-stacking, affect the formation and stability of supramolecular assemblies at the molecular level?

asked Feb 25 in Computational Chemistry by TheScientist (138k points)

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What is the standard enthalpy change for the combustion of methane (CH4) gas at 298 K and 1 atm?

asked Feb 25 in Physical Chemistry by TheScientist (138k points)

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