Recent activity by Annett65L392

1 answer 34 views

What is the relationship between temperature and surface tension of a liquid, and how can it be experimentally determined using a stalagmometer and capillary rise method?

asked Feb 24 in Surface Chemistry

1 answer 44 views

How does the geometric arrangement of atoms and molecules in zeolites affect their ability to act as catalysts in various chemical reactions?

asked Feb 20 in Computational Chemistry

1 answer 27 views

What is the efficient method for preparing 2,4-dinitrophenylhydrazine from hydrazine and 2,4-dinitrochlorobenzene, and what is the yield of the reaction?

answered Feb 20 in Chemical synthesis

1 answer 33 views

What is the efficiency of an electrochemical cell when the electrode potential is +0.6V and the cell voltage is 1.8V?

asked Feb 20 in ElectroChemistry

1 answer 36 views

How does the co-administration of carbidopa and levodopa affect the pharmacological effects and adverse reactions of each drug in the treatment of Parkinson's disease?

answered Feb 18 in Medicinal Chemistry

1 answer 35 views

How does the chemical structure of a drug affect its pharmacodynamics in the human body?

answered Feb 18 in Medicinal Chemistry

1 answer 38 views

How can we predict and understand the electronic and magnetic properties of topological materials using quantum chemical calculations and analysis?

asked Feb 14 in Quantum Chemistry

1 answer 31 views

What are the main sources of Persistent Organic Pollutants (POPs) and how do they get accumulated in different environmental compartments?

asked Feb 14 in Environmental Chemistry

1 answer 102 views

What is the role of metal ions in the active sites of metalloenzymes and metalloproteins, and how do coordination chemistry principles contribute to our understanding of their reactivity and function?

answered Feb 13 in Coordination Chemistry

1 answer 116 views

What is the oxidation state of manganese in potassium permanganate (KMnO4)?

answered Feb 13 in ElectroChemistry

1 answer 37 views

What are the intermolecular forces present in hexane?

answered Feb 13 in Chemical bonding

1 answer 61 views

How to design a production system for lubricants that meets the specified requirements including process flow, raw materials selection, processing conditions, quality control measures and cost optimization?

answered Feb 12 in Chemical engineering

1 answer 27 views

How do the surface chemistry and mechanisms of corrosion differ from those of passivation, and what factors contribute to the formation of each process in metallic materials?

asked Feb 12 in Surface Chemistry

1 answer 44 views

How can the electronic transport properties of a molecular system be evaluated using density functional theory (DFT) calculations, and how do factors such as molecular structure and device contacts impact the resulting transport properties?

asked Feb 7 in Computational Chemistry

1 answer 48 views

How can the design of a lubricant production system be optimized to minimize energy consumption and waste generation while maximizing product yield and quality?

asked Feb 7 in Chemical engineering

1 answer 62 views

Determine the oxidation state of the following elements in the compound potassium permanganate (KMnO4): a) Potassium b) Manganese c) Oxygen

asked Feb 4 in ElectroChemistry

1 answer 96 views

How does changing the reaction stoichiometry affect the rate of a chemical reaction between hydrogen peroxide and potassium iodide?

asked Feb 3 in Chemical kinetics

1 answer 168 views

What is the difference between a polar and nonpolar covalent bond, and how does the presence of polar or nonpolar bonds contribute to the overall polarity of a molecule? Provide specific examples to illustrate your answer.

answered Jan 30 in Chemical education

1 answer 79 views

Calculate the heat capacity of 50 grams of water at 25°C, given that the specific heat of water is 4.184 J/g°C.

answered Jan 23 in Chemical thermodynamics

1 answer 119 views

Calculate the corrosion potential of a nickel metal electrode in a 0.1 M NaCl solution with a pH of 7.2, given that the standard electrode potential for the Ni2+/Ni redox reaction is -0.25 V vs. the standard hydrogen electrode.

asked Jan 23 in ElectroChemistry

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