Recent activity by KarinStaley

1 answer 27 views

What is the relationship between the size of nanoparticles and their electronic and optical properties, as determined by quantum calculations?

answered 2 days ago in Quantum Chemistry

1 answer 18 views

What is the most effective catalyst for the polymerization of ethylene oxide to produce high molecular weight polyethylene oxide?

answered 5 days ago in Chemical synthesis

1 answer 25 views

What is the effect of temperature on the critical current density of a given superconducting material?

asked Feb 19 in Materials Chemistry

1 answer 32 views

How does the coordination chemistry of metalloenzymes and metalloproteins affect their biological activity and specificity towards certain substrates?

answered Feb 19 in Coordination Chemistry

1 answer 20 views

How does the arrangement of atoms affect the properties of crystals, and how can crystallography be used to determine this arrangement?

asked Feb 17 in Physical Chemistry

1 answer 8 views

How does the activation of the cAMP signaling pathway affect the phosphorylation state of target proteins in liver cells?

answered Feb 17 in BioChemistry

1 answer 34 views

How do different types of sunscreen agents (e.g. organic vs. inorganic) differ in their photochemical properties, and how do these properties affect their effectiveness at protecting against UV radiation?

answered Feb 14 in PhotoChemistry

1 answer 33 views

What is the predicted bond angle in a molecule of ammonia (NH3)?

asked Feb 13 in Chemical bonding

1 answer 35 views

What is the effect on the equilibrium position of the following reaction: 2NO2(g) ⇌ N2O4(g) If we add more N2O4 to the reaction chamber?

answered Feb 13 in Chemical equilibrium

1 answer 44 views

What is the expected pH of a 0.1M solution of HClO4?

asked Feb 13 in Chemical bonding

1 answer 45 views

How does eutrophication affect the concentration of dissolved oxygen in aquatic ecosystems and what are the consequences of low oxygen levels on the survival of aquatic organisms?

asked Feb 13 in Environmental Chemistry

1 answer 30 views

How can we design new drugs that target cancer cells specifically, without harming normal healthy cells?

asked Feb 12 in Medicinal Chemistry

1 answer 33 views

How to design a cost-effective and environmentally friendly system for treating the industrial wastewater of a manufacturing plant that involves the production of heavy metals and toxic chemicals?

asked Feb 12 in Chemical engineering

1 answer 39 views

How can the synthesis of polypropylene from propylene monomer be optimized to increase the yield and molecular weight of the resulting polymer while minimizing the amount of impurities and defects in the product?

answered Feb 11 in Chemical synthesis

1 answer 25 views

How can the mechanical properties of polymer-based composites be optimized for aerospace applications, taking into consideration factors such as structural stability, durability, weight and cost?

asked Feb 10 in Polymer Chemistry

1 answer 32 views

How can the environmental impact of polymer-based packaging materials be reduced while maintaining their functionality and durability?

asked Feb 7 in Polymer Chemistry

1 answer 64 views

Here's a question for the student: What are the possible resonance structures of the nitrate ion (NO3-) and explain how the resonance hybrid structure is different from any of the contributing resonance structures?

asked Feb 4 in Chemical bonding

1 answer 49 views

Calculate the standard enthalpy change for the liquid-to-gas phase transition of water at 100°C and atmospheric pressure, given that the enthalpy of vaporization of water is 40.7 kJ/mol.

answered Feb 3 in Chemical thermodynamics

1 answer 69 views

How do changes in the phosphorylation state of proteins within a cell’s signal transduction pathway affect the activation of downstream enzymes and ultimate cellular response? Provide examples of specific signal transduction pathways and how modulating these phosphorylation events can impact cellular behavior.

asked Jan 31 in BioChemistry

1 answer 91 views

How can we increase the awareness and implementation of safety protocols in a chemistry lab to ensure a safe and secure learning environment for all students?

asked Jan 30 in Chemical education

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