Recent activity by KatherineRei

1 answer 18 views

What is the rate of polymerization at a specific temperature and monomer concentration for a vinyl monomer using a free radical mechanism?

answered 3 days ago in Polymer Chemistry

1 answer 21 views

What is the quantum mechanical explanation behind the formation of hydrogen bonds between water molecules and how can this be simulated accurately using computational chemistry methods?

asked 3 days ago in Computational Chemistry

1 answer 27 views

What is the balanced chemical equation for the single replacement reaction between zinc and hydrochloric acid to produce hydrogen gas and zinc chloride?

answered Feb 17 in Chemical reactions

1 answer 25 views

How does the addition of a catalyst affect the yield and molecular weight of polystyrene synthesized from styrene monomer via free radical polymerization?

answered Feb 17 in Chemical synthesis

1 answer 34 views

Using molecular orbital theory, calculate the bond order of the H2 molecule. Show all your calculations and explain what the bond order indicates about the stability of the molecule.

asked Feb 13 in Chemical bonding

1 answer 30 views

What is the oxidation state of sulfur in Na2S2O3 (sodium thiosulfate)?

answered Feb 13 in Chemical reactions

1 answer 8 views

What type of bonding is present in diamond, and how can you distinguish it from other types of bonding in solids?

asked Feb 13 in Chemical bonding

1 answer 49 views

What is the effect of fiber orientation on the mechanical properties of carbon fiber-reinforced polymer composites used in the aerospace industry?

answered Feb 13 in Polymer Chemistry

1 answer 34 views

What is the mechanism by which enzymes catalyze the hydrolysis of peptide bonds in proteins and what role do biomolecules such as amino acids, chaperones, and co-factors play in this process?

answered Feb 13 in Organic Chemistry

1 answer 36 views

How can the process of phytoremediation using hyperaccumulator plants be optimized to effectively remove heavy metals such as lead, arsenic, and cadmium from contaminated soil?

answered Feb 10 in Environmental Chemistry

1 answer 33 views

How can the efficiency of polymer-based photovoltaic materials be improved through chemical modifications to the polymer structure?

answered Feb 7 in Polymer Chemistry

1 answer 30 views

How can the efficiency of a hydrogen fuel production system be improved while minimizing the use of resources and reducing greenhouse gas emissions?

asked Feb 7 in Chemical engineering

1 answer 28 views

How can metabolomics and systems biology be used to determine the effect of a specific drug on the metabolic pathways of a cell?

answered Feb 5 in BioChemistry

1 answer 35 views

How can chemistry teachers provide better support and accommodations for students with learning disabilities to help them succeed in their chemistry coursework?

asked Feb 5 in Chemical education

1 answer 49 views

Calculate the total resistance of an electrochemical cell consisting of two half-cells where one half-cell has a copper electrode submerged in a 0.5 M CuSO4 solution, and the other half-cell has a zinc electrode submerged in a 1.0 M ZnSO4 solution. The copper electrode is connected to the zinc electrode through a salt bridge. The resistance of the salt bridge is 22 ohms, and the resistance of the copper and zinc electrodes are negligible.

asked Feb 3 in ElectroChemistry

1 answer 46 views

Calculate the pH of a solution with a concentration of 0.01 M HCl.

answered Feb 3 in Chemical reactions

1 answer 85 views

What is the role of the metal ion in the active site of the metalloenzyme carbonic anhydrase, and how does this facilitate the enzyme's function of catalyzing the hydration of carbon dioxide to bicarbonate ion?

asked Jan 31 in Coordination Chemistry

1 answer 69 views

How can we use gas chromatography to determine the percentage composition of a mixture of two or more compounds, and what factors can affect the accuracy of the results obtained?

asked Jan 30 in Analytical Chemistry

1 answer 59 views

How can liquid chromatography be used to accurately determine the concentration of a specific compound in a complex sample mixture?

asked Jan 29 in Analytical Chemistry

1 answer 59 views

How can gas chromatography be used to determine the percentage composition of a mixture containing three unknown compounds?

asked Jan 29 in Analytical Chemistry

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