Recent activity by WilbertNorri

1 answer 62 views

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

asked Feb 24 in PhotoChemistry

1 answer 13 views

How does the reaction rate of a chemical reaction change when the solvent is changed from water to ethanol?

answered Feb 22 in Chemical kinetics

1 answer 37 views

What is the relationship between the reaction rate and equilibrium constant for the reaction between potassium iodate and sodium sulfite in acidic aqueous solution, and how does the addition of a catalyst affect this relationship?

answered Feb 22 in Chemical kinetics

1 answer 26 views

What is the predicted bond angle in a water molecule, and how does this angle contribute to the molecule's polarity and unique properties?

asked Feb 22 in Chemical bonding

1 answer 37 views

What is the effect of different ligands on the photochemical properties of coordination compounds? Use specific examples to explain how the photophysical and photochemical properties of the complex can be altered by changing the ligand.

asked Feb 22 in PhotoChemistry

1 answer 30 views

What are the factors that affect the pharmacokinetic properties of a drug, and how can these properties be optimized to improve its therapeutic effectiveness?

answered Feb 22 in Medicinal Chemistry

1 answer 24 views

What is the major product obtained from the reaction between 2-bromo-2-methylbutane and alcoholic potassium hydroxide, and why?

answered Feb 20 in Organic Chemistry

1 answer 37 views

How can the yield of a chemical reaction be optimized by manipulating the reaction conditions and parameters such as temperature, pressure, reactant concentrations, and catalysts for the synthesis of ethyl acetate via Fischer esterification reaction?

asked Feb 20 in Chemical engineering

1 answer 28 views

What is the effect of varying concentrations of water as a solvent on the reaction rate of a given chemical reaction?

answered Feb 20 in Chemical kinetics

1 answer 27 views

How does the doping concentration of boron and phosphorus affect the electronic properties of a silicon semiconductor, and how can this knowledge be applied in the design and optimization of electronic devices?

answered Feb 19 in Materials Chemistry

1 answer 36 views

What is the effect of changing the concentration of an inorganic compound on its conductivity and how can it be quantitatively determined?

asked Feb 19 in Inorganic Chemistry

1 answer 37 views

How does the concentration and size of microplastics directly affect the toxicity and bioaccumulation potential in marine organisms like plankton and fish in a given area?

answered Feb 18 in Environmental Chemistry

1 answer 38 views

How can we optimize the production process of detergents to minimize environmental impact while maintaining the effectiveness of the final product?

asked Feb 14 in Chemical engineering

1 answer 35 views

What is the role of metal ions in metalloenzymes and metalloproteins? How does the coordination chemistry of these metal ions affect the biological function of these molecules?

answered Feb 13 in Coordination Chemistry

1 answer 92 views

How does the inadequate emphasis on chemical reactions and equations affect a chemistry student's understanding of chemical education?

answered Feb 13 in Chemical education

1 answer 69 views

How can the synthesis and characterization of new cathode materials improve the performance and durability of fuel cells? What specific properties should be optimized in order to achieve better fuel cell performance and durability?

answered Feb 11 in Materials Chemistry

1 answer 60 views

How can the properties of polymer-based electronic materials be tailored to improve their performance in organic solar cells?

answered Feb 10 in Polymer Chemistry

1 answer 30 views

How can the efficiency of the production process of adhesives be increased while maintaining the desired adhesive properties?

asked Feb 7 in Chemical engineering

1 answer 31 views

How can chemistry educators increase the everyday relevance of the subject to students who have limited exposure to chemistry in their daily lives?

answered Feb 4 in Chemical education

1 answer 60 views

Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH), given the balanced chemical equation: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l). The enthalpies of formation for NaCl(aq) and H2O(l) are -407.3 kJ/mol and -285.8 kJ/mol, respectively. The specific heat capacity of the solution is 4.18 J/(g*K), and the mass of the resulting solution is 100 g.

answered Feb 3 in Chemical thermodynamics

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