Recent activity by JoannKinne38

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What is the relationship between surface tension and temperature as measured by the pendant drop method?

1 answer 20 views

What is the effect of different solvents (water, ethanol, and acetone) on the rate of the chemical reaction between sodium hydroxide and hydrochloric acid?

answered 3 days ago in Chemical kinetics

1 answer 19 views

How does the presence of heavy metals in contaminated soil affect the growth and development of crops, and what are the possible ways to mitigate their negative impact on agriculture?

answered 3 days ago in Environmental Chemistry

1 answer 21 views

What is the optimal reaction conditions and yield for the preparation of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas through the process of chemical synthesis?

answered 3 days ago in Chemical synthesis

1 answer 24 views

What is the predicted bond angle in a molecule of carbon dioxide (CO2)?

asked 3 days ago in Chemical bonding

1 answer 25 views

How do the photochemical properties of dyes and pigments affect their color and stability when exposed to sunlight?

asked 3 days ago in PhotoChemistry

1 answer 21 views

How does the photochemical behavior of transition metal complexes vary with changes in the ligand structure? Compare and contrast the photochemical properties of a series of transition metal complexes with different ligands.

answered 3 days ago in PhotoChemistry

1 answer 25 views

How does the photochemical behavior differ between enantiomers of a chiral molecule and how can this difference be observed and studied experimentally?

asked 3 days ago in PhotoChemistry

1 answer 19 views

What is the overall ATP yield per glucose molecule metabolized in the citric acid cycle and oxidative phosphorylation? And how is this energy yield influenced by electron transport chain inhibitors?

asked 3 days ago in BioChemistry

1 answer 27 views

How does the molecular weight and branching of a polymer affect its suitability for use in 3D printing, and how can these properties be optimized for improved printing quality and mechanical strength of the printed object?

asked 4 days ago in Materials Chemistry

1 answer 21 views

How does the formation of a passive layer on the surface of a metal prevent corrosion, and what factors influence the formation of this layer?

answered 5 days ago in Surface Chemistry

1 answer 5 views

What is the effect of varying the oxidation state of the dopant on the electronic conductivity of conductive polymers, and how can this be optimized for use in flexible electronics?

asked 5 days ago in Materials Chemistry

1 answer 25 views

What is the effect of concentration on the rate of reaction between sodium thiosulfate and hydrochloric acid and how does it affect the efficiency of the reaction?

answered 5 days ago in Chemical kinetics

1 answer 40 views

How does the concentration of the reactants affect the selectivity of a reaction in a chemical system?

asked 6 days ago in Chemical kinetics

1 answer 31 views

How does the choice of metal catalyst affect the selectivity of hydrocarbon oxidation on metal surfaces?

asked 6 days ago in Surface Chemistry

1 answer 40 views

How does the change in reactant orientation affect the rate of the chemical reaction between magnesium and hydrochloric acid, and how can this be investigated?

answered Feb 18 in Chemical kinetics

1 answer 21 views

What is the balanced chemical equation for the reaction of hydrochloric acid (HCl) with sodium bicarbonate (NaHCO3) and what gas is evolved during the reaction?

answered Feb 17 in Chemical reactions

1 answer 36 views

What are the mechanisms responsible for the phosphorescent properties of certain materials and how can we utilize this knowledge to design more efficient phosphorescent materials for use in various applications?

answered Feb 14 in PhotoChemistry

1 answer 37 views

How can the yield of fragrances be improved in the production process while minimizing the formation of impurities and maximizing safety for workers and the environment?

answered Feb 13 in Chemical engineering

1 answer 31 views

What are the differences between homogeneous and heterogeneous catalysis and how do they affect the reaction mechanism? Provide examples of each and explain the advantages and disadvantages of each type of catalysis.

asked Feb 13 in Physical Chemistry

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