Recent activity by MervinBowden

1 answer 79 views

What is the mechanism behind the photochemical degradation of the pesticide chlorpyrifos in water solution? How does the process change with different wavelengths of light?

asked Feb 22 in Physical Chemistry

1 answer 73 views

How does the molecular weight of a polymer affect the flow behavior of its melt under shear stress?

asked Feb 21 in Polymer Chemistry

1 answer 82 views

What are the electronic and optical properties of a specific conjugated polymer and how can they be calculated using quantum chemistry models?

asked Feb 20 in Quantum Chemistry

1 answer 86 views

What is the effect of varying the concentration of reactants on the rate of a chemical reaction and how does this impact the overall efficiency of the reaction?

asked Feb 20 in Chemical kinetics

1 answer 79 views

What is the effect of varying the composition of metal alloys on their mechanical properties, such as strength, ductility, and corrosion resistance, and how does this relate to the performance of the alloys in aerospace applications?

answered Feb 18 in Materials Chemistry

1 answer 83 views

How does the addition of specific biomolecules affect the mechanical properties of a biomaterial and how can this information be used to design scaffolds for tissue engineering applications?

answered Feb 17 in Materials Chemistry

1 answer 90 views

How can we optimize the synthesis and characterization process of new materials for use in fuel cells to improve their efficiency and prolong their lifespan?

answered Feb 14 in Materials Chemistry

1 answer 116 views

What are the mechanisms of excited state relaxation in a specific organic molecule using ab initio calculations? How does the relaxation pathway change based on the electronic states involved and the solvent environment?

asked Feb 13 in Computational Chemistry

1 answer 65 views

How can the prediction of chemical reactivity and selectivity using quantum chemistry tools help in designing more efficient and selective catalysts for industrial processes?

asked Feb 10 in Quantum Chemistry

1 answer 97 views

How can the photochemical properties of supramolecular assemblies be manipulated and controlled for targeted applications in fields such as solar energy conversion and drug delivery?

answered Feb 10 in PhotoChemistry

1 answer 91 views

How can the photochemical properties of phosphorescent materials be modified to enhance their efficiency as photovoltaic materials in solar cells?

answered Feb 10 in PhotoChemistry

1 answer 82 views

How can the chemistry curriculum be modified to better support students with learning disabilities in understanding and applying fundamental concepts such as stoichiometry and balancing chemical equations?

answered Feb 6 in Chemical education

1 answer 90 views

How can chemistry students overcome the challenge of limited availability of chemistry-related internships and job opportunities in today's market?

asked Feb 5 in Chemical education

1 answer 92 views

How can chemistry students be given increased access to current research in the field, and what strategies can educators implement to better integrate this research into classroom instruction and student learning experiences?

asked Feb 4 in Chemical education

1 answer 154 views

How can a chemist selectively protect an amine group in the presence of hydroxyl and carboxyl groups when synthesizing a complex organic molecule using protecting groups?

answered Feb 4 in Organic Chemistry

1 answer 131 views

Calculate the standard Gibbs free energy change for the electrochemical cell reaction using the given half-reactions:Cu^2+(aq) + 2 e^- → Cu(s) E° = +0.34 VSn^4+(aq) + 2 e^- → Sn^2+(aq) E° = +0.15 VConstruct the cell diagram and identify the anode and cathode. Determine the overall cell potential and whether the reaction is spontaneous.

answered Feb 3 in ElectroChemistry

1 answer 77 views

How can electrophoresis be used to determine the composition of a protein sample, and what are the key factors that impact the accuracy and precision of this type of analysis?

asked Jan 29 in Analytical Chemistry

1 answer 97 views

Calculate the enthalpy of combustion of methane if 2.56 g of methane was burnt completely in a bomb calorimeter containing excess oxygen, causing a temperature rise of 4.58 °C in the calorimeter, which has a heat capacity of 1.26 kJ/°C. The balanced chemical equation for the combustion of methane is as follows: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + energy.

answered Jan 23 in ThermoChemistry

1 answer 100 views

Calculate the enthalpy of adsorption for the adsorption of 2.5 moles of nitrogen gas at 298 K on the surface area of 1 gram of activated charcoal, given that the partial pressure of nitrogen gas is 0.1 atm. The heat of vaporization of nitrogen is 5.6 kJ/mol. Express your answer in kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 84 views

Calculate the enthalpy change for the dissolution of 10 grams of sodium hydroxide in excess water, given that the solution formed has a final temperature of 25°C, and the specific heat capacity of the solution is 4.184 J/(g°C). The molar enthalpy of dissolution of NaOH is -44 kJ/mol. Assume that the density of the solution is equal to that of water.

answered Jan 23 in ThermoChemistry

Recent activity by MervinBowden

Categories