Recent activity by CharmainHers

1 answer 41 views

How does the shape and size of a molecule affect its energy transfer processes in solution?

asked Feb 24 in Quantum Chemistry

1 answer 39 views

How does the regulation of fatty acid synthesis and degradation contribute to the control of lipid metabolism and transport in the human body? Include the most important enzymes, hormones and pathways involved in this process.

asked Feb 24 in BioChemistry

1 answer 33 views

How does the presence of a double bond affect the electrophilic addition reaction of an alkene with hydrogen bromide, and what is the mechanism behind this reaction?

answered Feb 22 in Organic Chemistry

1 answer 32 views

How does the molecular weight of the resulting polymer in a polymerization reaction change with respect to the ratio of monomers used?

asked Feb 21 in Organic Chemistry

1 answer 40 views

How does the co-administration of Warfarin and Ibuprofen affect the anticoagulant effects of Warfarin?

asked Feb 18 in Medicinal Chemistry

1 answer 36 views

What type and concentration of pollutants present in soil can have the most detrimental effect on crop growth and yield, and how can soil remediation techniques be used to mitigate these effects?

asked Feb 14 in Environmental Chemistry

1 answer 32 views

How can we synthesize a biodegradable polymer using renewable resources as starting materials, and what specific conditions and catalysts should be used in the reaction to achieve the desired properties of the polymer?

answered Feb 14 in Polymer Chemistry

1 answer 37 views

How do modifications to histone proteins affect DNA accessibility and transcriptional regulation?

asked Feb 13 in BioChemistry

1 answer 34 views

How does insulin regulate the metabolism of carbohydrates? Provide a detailed explanation of the biochemical mechanisms involved in the process.

asked Feb 13 in BioChemistry

1 answer 50 views

How do different types of DNA-protein interactions affect the stability and dynamics of the protein-DNA complex in molecular dynamics simulations?

asked Feb 12 in Computational Chemistry

1 answer 70 views

How does cholesterol affect the fluidity of cell membranes and why is it important for maintaining cellular function?

asked Feb 12 in BioChemistry

1 answer 42 views

How can chemistry teachers provide adequate support for students with learning disabilities in the classroom to ensure their success in the subject?

answered Feb 5 in Chemical education

1 answer 38 views

For a student studying surface chemistry and the adsorption of gases on solid surfaces, a precise problem could be: What is the effect of temperature on the adsorption of nitrogen gas on activated charcoal and how does it change the isotherm?

asked Feb 4 in Surface Chemistry

1 answer 93 views

Calculate the standard enthalpy change (ΔH°) for the following reaction involving the coordination compound [Fe(H2O)6]2+:[Fe(H2O)6]2+(aq) + 2Cl-(aq) → [FeCl2(H2O)4](aq) + 2H2O(l) Given: ΔH°f [FeCl2(H2O)4](aq) = -334 kJ/mol ΔH°f [Fe(H2O)6]2+(aq) = -393 kJ/mol ΔH°f H2O(l) = -286 kJ/mol Note: The superscript ° denotes standard conditions (i.e. 1 atm and 25°C) and the superscript f denotes standard enthalpy of formation.

asked Feb 3 in Chemical thermodynamics

1 answer 58 views

Calculate the lattice energy of sodium chloride (NaCl) using Born-Haber cycle and Hess's law. Given the following data:- Enthalpy of sublimation of sodium (Na): +108.6 kJ/mol- Enthalpy of dissociation of chlorine (Cl2): +243.0 kJ/mol- Bond energy of Na-Cl bond: -412.0 kJ/mol- Ionization energy of sodium (Na): +496.0 kJ/mol- Electron affinity of chlorine (Cl): -349.0 kJ/mol- Heat of formation of sodium chloride (NaCl): -411.0 kJ/mol.

answered Jan 23 in Inorganic Chemistry

1 answer 95 views

A 50 mL solution of 0.1 M Cu(NO3)2 was electrolyzed for 20 minutes. During this time, a current of 0.5 A was passed through the solution. What is the final concentration of Cu2+ ions in the solution after the electrolysis?

asked Jan 22 in ElectroChemistry

1 answer 56 views

What is the evolutionary approach's evaluation of perceptual illusions?

asked Jan 20 in Psychology

1 answer 81 views

Why is the foot-in-the-door technique effective?

answered Jan 20 in Psychology

1 answer 82 views

What is falsifiability in relation to theories?

answered Jan 20 in Psychology

1 answer 80 views

How might peer relationships influence adolescent identity formation?

answered Jan 20 in Psychology

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