Recent activity by MargueriteSa

1 answer 28 views

What is the relationship between light intensity and the rate of photochemical reactions in the process of photosynthesis of a specific plant species, and how does this impact the efficiency of photosynthesis?

asked 2 days ago in PhotoChemistry

1 answer 26 views

How does the presence of coordination compounds affect the photostability of certain organic compounds, and what factors contribute to this effect? Provide examples of specific coordination compounds and organic molecules to support your answer.

asked 5 days ago in PhotoChemistry

1 answer 20 views

What is the effect of the orientation of reactant molecules on the rate of the reaction? Provide evidence from experiments and explain the underlying kinetic theory behind your observations.

answered 5 days ago in Chemical kinetics

1 answer 25 views

What is the enthalpy change for the ionization of hydrogen atoms in the gas phase, given that the ionization energy of a hydrogen atom is 1312 kJ/mol?

asked Feb 20 in ThermoChemistry

1 answer 25 views

What is the reason behind the difference in boiling points of molecules with similar molecular masses, such as methane and ammonia, and how does the strength of intermolecular forces (IMFs) impact this difference?

answered Feb 19 in Chemical education

1 answer 32 views

How does the concentration of heavy metals in a body of water affect the growth and survival of aquatic organisms, and what measures can be taken to mitigate the negative impacts of heavy metal toxicity in the environment?

answered Feb 19 in Environmental Chemistry

1 answer 24 views

How do the properties of surfactants change with variations in their molecular structures and how do these changes affect their behavior in different types of surfaces?

asked Feb 17 in Surface Chemistry

1 answer 22 views

How do surfactants in laundry detergents and cleaning agents affect the surface tension and interfacial properties of water, and how does understanding these mechanisms help in the cleaning process?

answered Feb 17 in Surface Chemistry

1 answer 25 views

How can we use quantum coherence and entanglement to design more efficient and accurate molecular and nanoscale systems for practical applications such as drug delivery and energy storage?

answered Feb 14 in Quantum Chemistry

1 answer 35 views

What is the optimal temperature and pressure conditions required for the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol?

asked Feb 14 in Chemical synthesis

1 answer 41 views

How do the ionic properties of ILs affect their potential use as solvents, electrolytes and catalysts in chemical reactions?

answered Feb 13 in Physical Chemistry

1 answer 46 views

How does the binding of transcription factors to specific DNA sequences regulate gene expression in eukaryotic cells?

asked Feb 13 in BioChemistry

1 answer 34 views

How does the drug doxorubicin work in treating cancer, and what specific cellular processes and pathways does it target?

asked Feb 12 in Medicinal Chemistry

1 answer 9 views

How can we design drugs that specifically target cancer cells without damaging healthy cells?

answered Feb 12 in Medicinal Chemistry

1 answer 21 views

How can we design a drug that specifically targets and inhibits the growth of HER2-positive breast cancer cells without harming healthy cells in the body?

answered Feb 12 in Medicinal Chemistry

1 answer 20 views

How does the presence of cholesterol affect the signaling and metabolism of lipids in cells? Provide a detailed explanation of the molecular mechanisms involved and their potential implications on cellular function.

asked Feb 12 in BioChemistry

1 answer 55 views

How can the synthesis and characterization of novel materials for energy storage applications be optimized for maximum efficiency and cost-effectiveness?

answered Feb 11 in Materials Chemistry

1 answer 42 views

How can the release rate of drugs from polymer-based drug delivery systems be controlled and optimized for maximum therapeutic efficacy and minimal side effects?

answered Feb 10 in Polymer Chemistry

1 answer 67 views

Calculate the standard heat of mixing when 50 mL of 1 M HCl is mixed with 100 mL of 1 M NaOH at 25°C. The standard heat of neutralization of 1 M HCl and 1 M NaOH is -57.32 kJ/mol.

asked Feb 3 in ThermoChemistry

1 answer 46 views

Calculate the standard electrode potential for the redox reaction: Al(s) + Fe2+(aq) → Fe(s) + Al3+(aq) at 298K, given that the standard reduction potential for Fe2+/Fe is -0.44V and Al3+/Al is -1.66V.

asked Feb 3 in Chemical thermodynamics

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