Recent activity by MartyLeSouef

1 answer 65 views

What is the effect of concentration and duration of exposure of a photosensitizer on the rate of photochemical reactions?

asked Feb 22 in PhotoChemistry

1 answer 80 views

How does the coordination of metal ion affect the catalytic activity of metalloproteins? Provide examples and explain the importance in biological systems.

asked Feb 19 in Coordination Chemistry

1 answer 80 views

What is the chemical reaction mechanism for the conversion of an alkene to an alcohol using acidic potassium permanganate as the oxidizing agent, and how does the functional group of the alkene change during the reaction?

answered Feb 19 in Organic Chemistry

1 answer 79 views

How does the adsorption energy of a nitrogen molecule on the surface of a metal catalyst change with the addition of a small amount of a second metal dopant, as predicted by density functional theory calculations?

asked Feb 17 in Computational Chemistry

1 answer 111 views

What are the optical properties of liquid crystals and how do they affect the display properties of LCD screens?

asked Feb 13 in Physical Chemistry

1 answer 109 views

What is the effect of increasing the temperature on the ionization constant (Ka) of acetic acid (CH3COOH) which initially has a Ka value of 1.8 x 10^-5 M at 25°C and how does it affect the pH of its 0.1 M solution?

asked Feb 13 in Chemical equilibrium

1 answer 106 views

How can we use chemistry concepts and principles to explain the process of food spoilage and prevent it from happening in our daily lives?

answered Feb 13 in Chemical education

1 answer 115 views

How do excited state dynamics of a molecule vary with changes in its electronic structure, and how can this information be obtained through ab initio calculations in computational chemistry?

answered Feb 13 in Computational Chemistry

1 answer 91 views

How can the synthesis of polyacrylonitrile from acrylonitrile monomer be optimized to achieve the highest possible molecular weight of the resulting polymer?

answered Feb 11 in Chemical synthesis

1 answer 135 views

How can the process parameters (such as temperature, pressure, and reaction time) be optimized to improve the yield and quality of high-density polyethylene production using a slurry-based polymerization reaction?

asked Feb 10 in Chemical engineering

1 answer 82 views

How can the electronic and magnetic properties of metal-organic frameworks be accurately predicted using quantum chemistry calculations, and how do these properties impact the potential applications of these materials in fields such as catalysis and gas storage?

answered Feb 7 in Quantum Chemistry

1 answer 83 views

How can the magnetic properties of an unknown molecule be calculated using quantum chemistry methods?

answered Feb 7 in Quantum Chemistry

1 answer 85 views

Calculate the standard electrode potential for the following redox reaction: Zn(s) + Cu^2+(aq) -> Zn^2+(aq) + Cu(s) Given the standard reduction potentials for Zn^2+(aq)/Zn(s) and Cu^2+(aq)/Cu(s) are -0.76 V and +0.34 V, respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 73 views

What is the calculated bandgap of a silicon crystal using Density Functional Theory (DFT) calculations, with a lattice parameter of 5.43 Å? How does the calculated bandgap compare to experimental values reported in the literature?

asked Jan 31 in Computational Chemistry

1 answer 129 views

How does alternative splicing affect RNA stability and protein diversity? Provide specific examples of alternative splicing events in human genes and their functional consequences.

answered Jan 31 in BioChemistry

1 answer 145 views

What is the bond strength of a molecule made up of two hydrogen atoms and one oxygen atom? Provide a detailed explanation of how you arrived at your answer, including the calculation of the bond energy and any factors that affect bond strength.

asked Jan 30 in Chemical bonding

1 answer 74 views

What initiatives can be taken by educational institutions to better prepare chemistry students for career opportunities in industry and research?

asked Jan 30 in Chemical education

1 answer 147 views

What are some effective strategies for understanding complex chemical concepts, and how can they be applied to improve your performance in chemistry class?

answered Jan 30 in Chemical education

1 answer 76 views

Calculate the lattice energy of sodium chloride (NaCl) using Born-Haber cycle and Hess's law. Given the following data:- Enthalpy of sublimation of sodium (Na): +108.6 kJ/mol- Enthalpy of dissociation of chlorine (Cl2): +243.0 kJ/mol- Bond energy of Na-Cl bond: -412.0 kJ/mol- Ionization energy of sodium (Na): +496.0 kJ/mol- Electron affinity of chlorine (Cl): -349.0 kJ/mol- Heat of formation of sodium chloride (NaCl): -411.0 kJ/mol.

asked Jan 23 in Inorganic Chemistry

1 answer 38 views

When considering the attachment theory, who is the primary attachment figure?

answered Jan 20 in Psychology

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