Recent activity by KristeenBras

1 answer 21 views

How does the increase in temperature affect the reaction rate of the decomposition of hydrogen peroxide catalyzed by manganese dioxide (MnO2)?

asked 3 days ago in Chemical kinetics

1 answer 21 views

What is the optimal ratio of toluene to nitric acid for the efficient preparation of 2,4,6-trinitrotoluene, and how can this ratio be adjusted to increase the yield of the final product?

answered 5 days ago in Chemical synthesis

1 answer 25 views

What is the mechanism behind the pinacol-pinnacolone rearrangement and how does it relate to the stereochemistry of the reactants and products? Provide specific examples and discuss the factors that influence the reaction rate and product yield.

answered 5 days ago in Organic Chemistry

1 answer 26 views

How does the degradation of different polymer types vary under exposure to UV radiation, and what chemical processes are involved in this degradation?

asked Feb 19 in Polymer Chemistry

1 answer 40 views

Identify the type of solid (ionic, covalent, or metallic) for the compound ZnO. Provide a detailed explanation and evidence to support your answer.

asked Feb 18 in Inorganic Chemistry

1 answer 27 views

What is the role of Rubisco in the carbon fixation process during photosynthesis? How does its structure and function relate to its efficiency in fixing carbon dioxide?

asked Feb 14 in BioChemistry

1 answer 30 views

How does the quantum chemical calculation of excited states of a molecule help in understanding its electronic structure and the absorption spectrum?

asked Feb 14 in Computational Chemistry

1 answer 33 views

How do different factors such as dosage, route of administration, and metabolism affect the pharmacokinetics of a particular drug in the human body?

answered Feb 14 in Medicinal Chemistry

1 answer 33 views

How can the yield of a certain flavor compound be optimized in a production system?

asked Feb 14 in Chemical engineering

1 answer 32 views

How can the use of nanotechnology improve the energy storage capacity of lithium-ion batteries?

asked Feb 13 in Materials Chemistry

1 answer 39 views

What is the role of hydrogen bonding between complementary base pairs in stabilizing the structure of DNA, and how does this relate to the concept of base pairing specificity?

answered Feb 13 in BioChemistry

1 answer 29 views

How do different types of amino acid residues affect the stability and conformational changes in DNA-protein complexes during molecular dynamics simulations?

asked Feb 12 in Computational Chemistry

1 answer 31 views

What is the role of chlorofluorocarbons in causing ozone depletion and how can we replace them with more eco-friendly compounds to minimize their impact on the atmosphere?

answered Feb 12 in Environmental Chemistry

1 answer 35 views

How can the synthesis and characterization of new materials be optimized to improve drug delivery efficacy and reduce toxicity?

asked Feb 11 in Materials Chemistry

1 answer 40 views

How can the presence of heavy metals such as lead and mercury be detected and quantified in soil and water samples using analytical chemistry techniques, and what are the potential risks and impacts of these contaminants on human health and the environment?

answered Feb 10 in Environmental Chemistry

1 answer 41 views

How can the mechanical properties of 3D printed polymer objects be optimized for specific applications, such as automotive part production, through manipulations of polymer chemistry and processing parameters?

answered Feb 10 in Materials Chemistry

1 answer 33 views

How can the electrical conductivity of a polymer-based smart material be improved for better performance in electronic applications?

answered Feb 7 in Polymer Chemistry

1 answer 51 views

Calculate the number of electrons transferred in the electrochemical reaction when a solution of silver nitrate is added to a copper electrode and a salt bridge is used to complete the circuit.

answered Feb 3 in ElectroChemistry

1 answer 25 views

What is the chemical structure of a compound with a chemical formula of C9H10O2 that shows a signal at 2.3 ppm in its proton NMR spectrum and has a singlet signal at 170 ppm in its carbon NMR spectrum?

asked Jan 31 in Physical Chemistry

1 answer 77 views

How effective are current environmental regulations in reducing the amount of toxic pollutants released into the environment by industrial processes?

answered Jan 31 in Environmental Chemistry

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