Questions by VirgilioAbe5

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1 answer 18 views

How does the presence of quantum coherence and entanglement affect the electronic properties and behavior of a particular molecular system or nanoscale system?

asked 4 days ago in Quantum Chemistry

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1 answer 33 views

How do the photochemical properties of a fluorescent dye, such as its absorption and emission spectra and quantum yield, affect its performance in fluorescence microscopy applications?

asked 4 days ago in PhotoChemistry

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1 answer 16 views

What is the optimum conditions required for the synthesis of polypropylene from propylene monomer using Ziegler-Natta catalyst and how does it affect the properties of the resulting polymer?

asked 4 days ago in Chemical synthesis

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1 answer 18 views

What are the key properties of ceramics that make them suitable for use in high-temperature applications, and how can these properties be optimized for enhanced performance?

asked 5 days ago in Materials Chemistry

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1 answer 32 views

What is the bond energy of the carbon-carbon bond in ethane (C2H6) if the energy required to break the bond is 346 kJ/mol?

asked Feb 18 in Chemical reactions

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1 answer 28 views

How does the presence of metallic nanoparticles enhance the Raman signal in Surface-enhanced Raman spectroscopy (SERS) and what factors influence the enhancement efficiency?

asked Feb 17 in Surface Chemistry

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1 answer 38 views

What is the electronic structure and bonding model of the nitrogen dioxide (NO2) molecule, and how is this reflected in the molecular orbital diagram and spectroscopic properties of NO2?

asked Feb 14 in Quantum Chemistry

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1 answer 31 views

Suppose you are given two molecules, molecule A with a single bond and molecule B with a triple bond. Using your knowledge of chemical bonding, predict which molecule will have a higher bond strength and explain why.

asked Feb 13 in Chemical bonding

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1 answer 43 views

How do lipid bilayers behave under different conditions, such as temperature or pressure changes, in molecular dynamics simulations?

asked Feb 13 in Computational Chemistry

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1 answer 40 views

What is the mechanism of ligand substitution reactions in octahedral coordination complexes? How does the size, charge, and electronic properties of the incoming ligand influence the reaction rate and selectivity of the substitution process?

asked Feb 13 in Coordination Chemistry

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1 answer 30 views

How can the medicinal chemistry approach be utilized to develop novel, effective treatments for inflammatory bowel disease (IBD)?

asked Feb 10 in Medicinal Chemistry

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1 answer 37 views

How can the efficiency of a solar cell be improved by synthesizing and characterizing new materials for use as the absorber layer? Specifically, what properties should the new material possess to achieve optimal energy conversion and what are the best methods for characterizing these properties?

asked Feb 7 in Materials Chemistry

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1 answer 39 views

Calculate the zeta potential of a colloidal particle, given that the particle has a charge of -3.2 × 10^-19 C, a diameter of 250 nm, and is suspended in a solution with a dielectric constant of 78.3.

asked Feb 3 in Surface Chemistry

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1 answer 82 views

How can a better understanding of the role of chemistry in society and the economy help us to address important issues such as climate change, resource depletion, and public health?

asked Jan 30 in Chemical education

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1 answer 60 views

Calculate the irreversible work done by a gas expanding adiabatically from an initial volume of 1 L to a final volume of 5 L against a constant external pressure of 2 atm, assuming that the gas is initially at a temperature of 300 K and that its final temperature is 400 K.

asked Jan 23 in Physical Chemistry

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1 answer 51 views

Calculate the enthalpy change for the combustion of methane gas (CH4) at standard conditions given the following information: 4 moles of methane gas is burned in excess oxygen gas (O2) to form carbon dioxide gas (CO2) and liquid water (H2O). The enthalpy change for the combustion of 1 mole of methane gas is -890.4 kJ/mol.

asked Jan 23 in Chemical thermodynamics

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1 answer 61 views

Calculate the enthalpy change (∆H) for the combustion reaction of methane gas (CH4) using Hess’s Law, when the enthalpy changes for the following reactions are given: Reaction 1: CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l); ∆H = -891 kJ/mol Reaction 2: C (s) + O2 (g) → CO2 (g); ∆H = -393.5 kJ/mol Reaction 3: 2H2 (g) + O2 (g) → 2H2O (l); ∆H = -484 kJ/mol

asked Jan 23 in ThermoChemistry

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1 answer 48 views

What is the difference between secure and insecure attachment?

asked Jan 20 in Psychology

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1 answer 24 views

What is a potential solution for reducing conflict based on the evolutionary theory?

asked Jan 20 in Psychology

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1 answer 11 views

Why are microaggressions important to consider in psychology?

asked Jan 20 in Psychology

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