Recent activity by NinaDimattia

1 answer 22 views

What is the relationship between the size and shape of nanoparticles and their photochemical properties? Specifically, how does the absorption and emission spectra of gold nanoparticles change as their size and shape are varied?

answered 1 day ago in PhotoChemistry

1 answer 17 views

What forces or interactions stabilize the secondary protein structure, particularly the alpha-helix and beta-sheet conformations?

answered 1 day ago in BioChemistry

1 answer 24 views

How does the presence of heavy metals such as lead and mercury in soil and water sources affect the growth and survival of aquatic plants, and what are some effective methods for reducing heavy metal toxicity in the environment?

asked 3 days ago in Environmental Chemistry

1 answer 20 views

What is the mechanism of the formation of an ester from a carboxylic acid and an alcohol?

answered 5 days ago in Organic Chemistry

1 answer 30 views

What is the effect of changing the concentration of reactants on the reaction rate and sustainability in the decomposition of hydrogen peroxide catalyzed by potassium iodide?

answered 6 days ago in Chemical kinetics

1 answer 17 views

What is the coordination geometry of the [Th(NO3)6]2- complex ion?

answered 6 days ago in Coordination Chemistry

1 answer 21 views

How does the concentration of greenhouse gases affect the temperature of Earth's atmosphere?

asked Feb 19 in Environmental Chemistry

1 answer 27 views

How does the choice of exchange-correlation functional affect the accuracy of Density Functional Theory (DFT) calculations of the catalytic reaction mechanism of a specific chemical compound?

asked Feb 18 in Computational Chemistry

1 answer 25 views

How does the chemical composition of polymer-based optical materials affect their optical properties such as refractive index, transparency, and fluorescence?

answered Feb 18 in Polymer Chemistry

1 answer 27 views

How does the addition of functional groups such as oxygen, nitrogen or sulfur affect the electronic properties of graphene and its potential use in electronic devices?

asked Feb 17 in Materials Chemistry

1 answer 27 views

How does temperature affect the degradation and stability of polyethylene?

answered Feb 17 in Polymer Chemistry

1 answer 33 views

How does the excess input of nutrients from human activities cause eutrophication in aquatic ecosystems, and what are the chemical processes involved in this phenomenon?

answered Feb 13 in Environmental Chemistry

1 answer 51 views

How can the stability of an emulsion be enhanced using surfactants and what factors affect the stability of the emulsion?

asked Feb 10 in Surface Chemistry

1 answer 42 views

How can the SERS technique be used to study the adsorption process of organic molecules on metal surfaces?

asked Feb 10 in Surface Chemistry

1 answer 40 views

How can the process of ethylene polymerization be optimized to produce high molecular weight and high-density polyethylene while maintaining control over the reaction and reducing unwanted side reactions?

asked Feb 10 in Chemical synthesis

1 answer 39 views

How can the electrical conductivity of graphene be optimized for use in electronic devices, and what methods can be employed to achieve this?

answered Feb 7 in Materials Chemistry

1 answer 30 views

How can the chemical X be purified from impurities A, B, and C using the least possible amount of solvent and equipment?

answered Feb 6 in Chemical engineering

1 answer 34 views

How can chemistry students carry out hands-on experiments at home or in a limited-resource school setting with limited access to laboratory equipment and chemicals?

asked Feb 4 in Chemical education

1 answer 62 views

Does changing the concentration of reactants affect the reaction rate and ultimately, the profitability of the reaction in the synthesis of a particular chemical compound? If so, what is the optimal concentration of reactants that maximizes both the reaction rate and profitability?

answered Feb 4 in Chemical kinetics

1 answer 57 views

Determine the heat capacity of a 50-g sample of iron that is heated from 25°C to 100°C using 500 J of heat.

answered Feb 4 in Chemical thermodynamics

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