Recent activity by KrystleFarth

1 answer 78 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?

answered Feb 22 in Physical Chemistry

1 answer 76 views

What is the optimum ratio of diisocyanate to polyol in the synthesis of polyurethane to achieve maximum mechanical strength?

asked Feb 22 in Chemical synthesis

1 answer 73 views

How does the molecular structure of conductive polymers affect their electrical conductivity and mechanical flexibility, and how can this be optimized for use in flexible electronic devices?

answered Feb 21 in Materials Chemistry

1 answer 73 views

What is the molecular shape of carbon dioxide (CO2) and how does it relate to its electronic geometry?

answered Feb 21 in Physical Chemistry

1 answer 92 views

What is the bond length between two oxygen atoms in a molecule of O2, given that the equilibrium bond distance of oxygen is 121 pm?

asked Feb 18 in Chemical bonding

1 answer 89 views

What is the bond length between two carbon atoms in a molecule of ethylene (C2H4), given that the distance between the nuclei of the two carbon atoms is 1.33 Å? Additionally, what is the percent ionic character of the carbon-carbon bond?

asked Feb 18 in Chemical bonding

1 answer 87 views

How does the absorption of light by molecules impact their electronic structure and subsequent photochemical reactions in complex materials, such as those found in solar cells?

asked Feb 17 in Quantum Chemistry

1 answer 87 views

What is the effect of temperature on the adsorption of gases on solid surfaces? Provide a detailed explanation with relevant examples from literature.

answered Feb 17 in Surface Chemistry

1 answer 83 views

How do persistent organic pollutants (POPs) affect the aquatic environment in terms of biological magnification, and what measures can be taken to mitigate their impact?

asked Feb 14 in Environmental Chemistry

1 answer 137 views

How can the synthesis of polyethylene from ethylene monomer be optimized to yield a higher molecular weight polymer?

answered Feb 11 in Chemical synthesis

1 answer 122 views

How can the structure and properties of a small molecule be optimized to improve its efficacy and safety as a treatment for hypertension, a condition often associated with cardiovascular diseases?

asked Feb 11 in Medicinal Chemistry

1 answer 70 views

How can the photochemical properties of fluorescent dyes be utilized to study biological systems and what are the considerations that need to be made when selecting a fluorescent dye for a particular application in photochemistry?

asked Feb 10 in PhotoChemistry

1 answer 76 views

How can computational chemistry be used to predict the binding affinity and selectivity of small molecule inhibitors targeting the interaction between two specific proteins? Compare and contrast the accuracy and limitations of various molecular docking methods in predicting the binding modes and energies of protein-protein interaction inhibitors.

answered Feb 6 in Computational Chemistry

1 answer 81 views

How can chemistry students increase their exposure to current research in the field, and what resources are available to help them stay up-to-date with the latest advancements and discoveries?

asked Feb 5 in Chemical education

1 answer 126 views

Determine the crystal structure of a compound with the empirical formula C6H12O6, given its X-ray diffraction pattern.

asked Feb 4 in Physical Chemistry

1 answer 137 views

Calculate the standard molar enthalpy change for the following reaction using quantum chemistry and compare it with the literature value: 2H2(g) + O2(g) -> 2H2O(g) Literature Value: -572 kJ/mol

asked Feb 3 in Quantum Chemistry

1 answer 137 views

Calculate the standard enthalpy of formation (ΔH°f) for butane (C4H10) given the following data:ΔH°f (kJ/mol)C(s) 0H2(g) 0C2H6(g) -84.7C3H8(g) -103.8Note: You may assume that butane undergoes complete combustion to form CO2(g) and H2O(l) and that the standard enthalpies of combustion for C4H10, CO2, and H2O are -2877.2, -393.5, and -285.8 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 106 views

How does changing the size of gold nanoparticles affect their thermodynamic stability when interacting with a solvent molecule? Use molecular dynamics simulations to investigate the differences in stability between nanoparticles with diameters of 5 nm, 10 nm, and 15 nm.

asked Feb 3 in Computational Chemistry

1 answer 90 views

Calculate the lattice energy of calcium oxide (CaO) given the following information: - The ionic charges of calcium (Ca) and oxygen (O) are +2 and -2, respectively. - The distance between the Ca and O ions in the lattice is 2.36 Å. - The Madelung constant for CaO is 1.74.

asked Jan 23 in Inorganic Chemistry

1 answer 93 views

Calculate the electronegativity difference between hydrogen (electronegativity of 2.20) and chlorine (electronegativity of 3.16) and determine the type of bond formed between them according to the electronegativity difference classification.

asked Jan 23 in Chemical bonding

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