Recent activity by StanGjo3033

1 answer 23 views

What is the role and mechanism of metal ions coordination in the catalytic activity of metalloproteins/enzymes? Provide an example of a metalloenzyme and discuss how its coordination chemistry affects its function.

answered 1 day ago in Coordination Chemistry

1 answer 21 views

What is the optimum reaction temperature for the synthesis of polyvinylpyrrolidone from vinylpyrrolidone monomer using different catalysts and what effect do these catalysts have on the reaction?

asked 4 days ago in Chemical synthesis

1 answer 28 views

How do the mechanical properties, such as tensile strength and elasticity, of different types of polymers used in biomedical applications, such as implantable medical devices or drug delivery systems, affect their performance and longevity?

asked 5 days ago in Materials Chemistry

1 answer 27 views

What is the heat of formation of hydrogen chloride (HCl) if the enthalpy change of the reaction 2H2(g) + Cl2(g) -> 2HCl(g) is -184.6 kJ/mol?

answered 6 days ago in Chemical bonding

1 answer 27 views

What is the dipole moment of the molecule ammonia (NH3)?

asked 6 days ago in Chemical bonding

1 answer 39 views

How does temperature affect the folding/unfolding of protein structures in a water environment, as observed through molecular dynamics simulations?

asked Feb 17 in Computational Chemistry

1 answer 38 views

What is the mechanism of action of the drug penicillin, and how does it target and inhibit bacterial cell wall synthesis?

asked Feb 14 in Medicinal Chemistry

1 answer 29 views

How can we improve the conductivity of polymer-based electronic materials?

answered Feb 13 in Polymer Chemistry

1 answer 31 views

What is the net ATP gained during glycolysis, and how is it generated?

asked Feb 13 in BioChemistry

1 answer 33 views

How do Chlorofluorocarbons (CFCs) contribute to the depletion of ozone in the atmosphere, and what chemical reactions lead to the breakdown of ozone?

asked Feb 12 in Environmental Chemistry

1 answer 45 views

How can the synthesis of carbon nanotubes be improved to enhance their electrical conductivity and mechanical strength for use in high-performance electronics and nanocomposites?

asked Feb 11 in Materials Chemistry

1 answer 10 views

How can the synthesis and characterization of novel materials for energy storage applications be optimized for maximum efficiency and sustainability?

answered Feb 11 in Materials Chemistry

1 answer 58 views

How can the process of ubiquitination explain the targeted degradation of specific proteins within a cell?

answered Feb 10 in BioChemistry

1 answer 38 views

How can quantum information processing and quantum computing be utilized to solve problems in drug discovery?

answered Feb 5 in Quantum Chemistry

1 answer 30 views

How can pharmacogenetics be used to predict an individual's response to a specific drug and optimize drug therapy for that individual?

answered Feb 5 in Medicinal Chemistry

1 answer 34 views

How can molecular modification be used to improve the efficacy and/or reduce the side effects of current treatments for conditions such as inflammatory bowel disease and acid reflux?

answered Feb 5 in Medicinal Chemistry

1 answer 48 views

Determine the rate law for the reaction of nitrogen dioxide with hydrogen gas, if the reaction rate is directly proportional to the concentration of nitrogen dioxide and the square of the concentration of hydrogen gas. Express the rate law in terms of the rate constant and the concentrations of the reactants.

asked Feb 4 in Chemical kinetics

1 answer 40 views

Design a process for the purification of 500 grams of crude aspirin containing impurities such as acetic acid and sulfuric acid. The final product must have a purity of at least 99.5%. Describe the steps involved in the purification process, including the necessary equipment, reagents, and conditions for each step. Also, calculate the percent yield of the final product based on the initial mass of crude aspirin.

answered Feb 4 in Chemical engineering

1 answer 58 views

Calculate the standard enthalpy change (∆H°) for the reaction between 25.0 mL of 0.100 M HCl and 25.0 mL of 0.100 M NaOH at 25°C. The density of each solution is 1.00 g/mL and the heat capacity of the solution is 4.18 J/g·°C. The reaction takes place in a calorimeter, and the temperature increase is measured to be 8.47°C.

asked Feb 3 in Chemical thermodynamics

1 answer 64 views

How do carbohydrate-protein interactions affect the recognition and binding between enzymes and their substrates?

answered Jan 31 in BioChemistry

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