Recent activity by ValentinChri

1 answer 33 views

How does the regulation of glycolysis contribute to the overall metabolism of glucose in the human body? Specifically, what are the key molecules and enzymes involved in regulation and how do they interact to ensure efficient energy production?

asked Feb 24 in BioChemistry

1 answer 27 views

How do the photochemical properties of lanthanide complexes change with variations in ligand types and coordination geometries?

asked Feb 22 in PhotoChemistry

1 answer 41 views

How does the molecular structure of a drug molecule relate to its biological activity, and how can computational chemistry be used to predict and optimize a drug's bioactivity?

answered Feb 21 in Physical Chemistry

1 answer 26 views

How does the body synthesize non-essential amino acids and what are the key enzymes involved in the biosynthesis pathway?

asked Feb 20 in BioChemistry

1 answer 27 views

What is the mechanism of the formation of an ester from a carboxylic acid and an alcohol?

asked Feb 20 in Organic Chemistry

1 answer 30 views

How do the temperature and magnetic field affect the critical current density of high-temperature superconducting materials?

answered Feb 19 in Materials Chemistry

1 answer 30 views

How do the coordination chemistry properties of copper in the active site of cytochrome c oxidase affect its ability to facilitate the reduction of molecular oxygen to water?

asked Feb 19 in Coordination Chemistry

1 answer 31 views

How does the change in the stoichiometric ratio of reactants affect the rate of a chemical reaction?

answered Feb 18 in Chemical kinetics

1 answer 28 views

How can we design a system for the production of vanilla flavor from vanillin, taking into account cost efficiency and environmental sustainability?

asked Feb 12 in Chemical engineering

1 answer 36 views

How can the synthesis of polypropylene from propylene monomer be optimized to achieve greater yields and higher molecular weight of the polymer?

answered Feb 11 in Chemical synthesis

1 answer 41 views

How can the chemical engineering design a safe and effective transportation system for hazardous chemicals that minimizes the risk of release or contamination during storage, loading, unloading, and transportation?

asked Feb 6 in Chemical engineering

1 answer 36 views

How can quantum mechanics be applied to develop more efficient algorithms for simulating chemical reactions and predicting chemical properties, and what are the potential applications of these quantum information processing and quantum computing tools in the field of chemistry?

answered Feb 5 in Quantum Chemistry

1 answer 37 views

Design a chemical reactor for the production of 500 kg/day of ethylene oxide through the oxidation of ethylene with oxygen in the presence of a silver catalyst. The reactor should achieve a conversion of 85% with a selectivity of 95% towards ethylene oxide, while operating at 3 atm and a reactor temperature range of 200-250°C. The feed stream consists of 15% ethylene, 5% oxygen, and the rest is nitrogen. Determine the appropriate reactor type, size, and operating conditions to achieve these specifications.

answered Feb 3 in Chemical engineering

1 answer 60 views

Calculate the standard enthalpy of formation for propene (C3H6) given that the standard enthalpy of combustion of propene is -1411.1 kJ/mol and the standard enthalpy of formation of carbon dioxide (CO2) and water (H2O) are -393.5 kJ/mol and -285.8 kJ/mol respectively.

answered Feb 3 in Chemical thermodynamics

1 answer 107 views

How does changing the pH value of the reactant solution affect the rate of photochemical reactions in the presence of a particular photosensitizer?

answered Feb 3 in PhotoChemistry

1 answer 103 views

How does the limited understanding of chemical bonding and molecular structure affect the efficiency of common chemical reactions, such as combustion or synthesis? Provide specific examples and explanations.

answered Jan 30 in Chemical education

1 answer 118 views

What is the concentration of chloride ions in a sample of seawater, given that the sample had a potential difference of 0.64 V and the standard potential of the silver-silver chloride electrode is 0.22 V at 25°C?

asked Jan 30 in Analytical Chemistry

1 answer 111 views

How can you identify the presence of nitrate ions in a given solution using ion-selective electrodes and what is the concentration of nitrate ions in the solution?

answered Jan 30 in Analytical Chemistry

1 answer 96 views

A chemist is attempting to electroplate copper onto a steel surface using a copper sulfate solution. The standard reduction potential for this reaction is -0.34 V, but the scientist is only seeing a voltage of -0.53 V. Calculate the overpotential for this electrochemical reaction.

answered Jan 22 in ElectroChemistry

1 answer 43 views

When is the social judgement theory most applicable?

answered Jan 20 in Psychology

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