Recent activity by ForrestPilpe

1 answer 19 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?

asked 23 hours ago in PhotoChemistry

1 answer 16 views

How does the presence of reaction intermediates affect the rate of a chemical reaction?

asked 3 days ago in Chemical kinetics

1 answer 33 views

How does the level of nutrient concentration affect the growth and population dynamics of algae and other aquatic plants in a eutrophic lake?

answered 5 days ago in Environmental Chemistry

1 answer 28 views

How does the electronic structure of a material vary with changes in its chemical composition? Use density functional theory calculations to explain the changes in electronic properties of a series of materials with varying compositions.

answered 5 days ago in Computational Chemistry

1 answer 29 views

What is the effect of varying reactant concentrations on the reaction rate and efficiency in the chemical reaction between hydrochloric acid and sodium thiosulfate, and how can this be explained using the collision theory?

answered 5 days ago in Chemical kinetics

1 answer 27 views

What is the effect of varying the cross-linking density on the water absorbency and swelling behavior of polymer-based superabsorbent materials?

answered 6 days ago in Polymer Chemistry

1 answer 26 views

How does the concentration of reactants affect the rate of the chemical reaction and the overall sustainability of the reaction?

answered 6 days ago in Chemical kinetics

1 answer 31 views

What spectroscopic techniques can be used to determine the geometry of a coordination compound? Provide specific examples and explain how they work.

answered Feb 14 in Coordination Chemistry

1 answer 33 views

How can we predict the electronic and magnetic properties of metal-organic frameworks using quantum chemistry calculations?

answered Feb 14 in Quantum Chemistry

1 answer 54 views

Identify the functional group(s) present in a given organic molecule using infrared (IR) spectroscopy and provide an explanation on how the molecular vibrations observed in the IR spectrum of the molecule correspond to the functional groups present.

asked Feb 13 in Physical Chemistry

1 answer 8 views

How can the production process for nitrogen gas be optimized for cost-efficiency and reduced environmental impacts in an industrial setting?

answered Feb 10 in Chemical engineering

1 answer 33 views

How can the compatibility between two different polymers in a blend be improved?

answered Feb 6 in Polymer Chemistry

1 answer 39 views

Determine the concentration of copper ions in a copper sulfate solution by constructing an electrochemical cell and measuring its voltage using a standard hydrogen electrode.

asked Feb 4 in Physical Chemistry

1 answer 72 views

Identify two complex chemical concepts that you find difficult to understand, and describe a strategy that you use to help comprehend and master the concepts.

asked Jan 31 in Chemical education

1 answer 46 views

How do different types of amino acid side chains interact with the DNA bases and affect DNA-protein interactions and regulation? Provide detailed examples and explanations of the chemical mechanisms involved in these interactions.

answered Jan 31 in BioChemistry

1 answer 74 views

What is the effect of adding a catalyst on the equilibrium position of a redox reaction in which the products have a higher number of moles than the reactants? Provide a numerical example to support your answer.

answered Jan 30 in Chemical equilibrium

1 answer 76 views

What is the concentration of copper sulfate in a solution that has an absorbance of 0.332 at a wavelength of 630 nm, given that the molar absorptivity of copper sulfate is 8.8 x 10^3 L/(mol cm)?

answered Jan 30 in Analytical Chemistry

1 answer 92 views

Identify the unknown compound X using mass spectrometry data given below. The molecular ion peak of X is observed at m/z 120 with a relative intensity of 100%. Additionally, the following fragment peaks with their respective relative intensities were also observed: m/z 105 (40%), m/z 92 (15%), m/z 77 (10%), and m/z 65 (5%). What is the molecular formula of X and what is its structural formula?

answered Jan 30 in Analytical Chemistry

1 answer 52 views

How can we analyze the protein composition of a sample using electrophoresis and determine the relative quantity of each protein present?

answered Jan 29 in Analytical Chemistry

1 answer 61 views

Calculate the Gibbs free energy change at 25°C for the reaction:2NO(g) + O2(g) → 2NO2(g)Given the standard Gibbs free energy of formation at 25°C for NO(g), O2(g), and NO2(g) are +86.4 kJ/mol, 0 kJ/mol, and +51.3 kJ/mol, respectively.

answered Jan 23 in Chemical thermodynamics

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