Recent activity by SaraNis63941

1 answer 19 views

What is the effect of pH on the rate of the reaction between hydrochloric acid (HCl) and sodium thiosulphate (Na2S2O3) in terms of reaction rate and reaction mechanism?

answered 3 days ago in Chemical kinetics

1 answer 16 views

What is the optimal molar ratio of acetic anhydride and salicylic acid required for the synthesis of acetylsalicylic acid with the highest yield possible?

answered 3 days ago in Chemical synthesis

1 answer 19 views

How will the change in pH affect the formation of the iron(III)-thiocyanate complex ion equilibrium?

asked 5 days ago in Chemical equilibrium

1 answer 21 views

What is the effect of solvent polarity on the intermolecular interactions between two molecules of different polarities?

answered 5 days ago in Quantum Chemistry

1 answer 24 views

What is the dipole moment of water molecule according to ab initio calculations, and how does it compare to the experimental value?

asked 5 days ago in Computational Chemistry

1 answer 22 views

How does the degree of crystallinity of a polymer affect its mechanical properties?

asked 5 days ago in Polymer Chemistry

1 answer 20 views

What is the balanced chemical equation for the combustion of methane gas (CH4) in oxygen gas (O2) during a redox reaction?

answered Feb 17 in Chemical reactions

1 answer 18 views

How does the addition of different types and amounts of salts affect the ionic conductivity of a polymer electrolyte used in lithium-ion batteries?

answered Feb 17 in Polymer Chemistry

1 answer 24 views

What is the coordination geometry and ligand involved in the active site of carbonic anhydrase? How does this coordination environment contribute to the enzyme's catalytic activity and selectivity towards carbon dioxide hydration?

asked Feb 17 in Coordination Chemistry

1 answer 23 views

How does surface modification of nanoparticles affect their properties and reactivity in different chemical environments?

asked Feb 17 in Surface Chemistry

1 answer 24 views

What is the effect of solvent polarity on the intermolecular interactions between water and ethanol?

answered Feb 14 in Quantum Chemistry

1 answer 26 views

What are the resonance structures of the ozone molecule (O3)? Draw each resonance form and identify the bond lengths and bond orders in each form.

answered Feb 14 in Chemical bonding

1 answer 35 views

What are the best ways to overcome the limitations of hands-on experimentation in chemistry education for students, and how can virtual or simulated experiments be effectively integrated into the learning process to enhance understanding?

asked Feb 14 in Chemical education

1 answer 8 views

How will increasing the pressure in a closed system at equilibrium with a gaseous reactant and product affect the equilibrium position? Provide a detailed explanation with a balanced chemical equation and experimental evidence to support your answer.

answered Feb 13 in Chemical equilibrium

1 answer 36 views

What is the oxidation state of nitrogen in the compound NH4+?

asked Feb 13 in Chemical reactions

1 answer 12 views

How can the process of drug design and development be optimized to create more effective treatments for inflammatory diseases?

answered Feb 10 in Medicinal Chemistry

1 answer 38 views

How can different types of soil contaminants affect the absorption of nutrients by plants, and what are the potential consequences for agricultural productivity and food supply?

asked Feb 6 in Environmental Chemistry

1 answer 40 views

Calculate the standard enthalpy of formation of ethane (C2H6) given the following bond energies (in kJ/mol):C-C: 347C-H: 413 Note: The equation for the formation of ethane is:C(graphite) + 3H2(g) -> C2H6(g)

asked Feb 3 in ThermoChemistry

1 answer 90 views

How do changes in environmental conditions affect the metabolic pathways and molecular networks involved in cellular metabolism? Provide examples using metabolomics and systems biology approaches.

answered Jan 31 in BioChemistry

1 answer 69 views

What is the mechanism of the catalytic reaction between methanol and oxygen on a platinum (111) surface using density functional theory calculations?

asked Jan 31 in Computational Chemistry

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