Recent activity by EffieQkd6688

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What is the effect of increasing pressure on the rate of the reaction between hydrochloric acid and sodium thiosulfate?

1 answer 79 views

What is the effect of temperature on the rate of the photochemical reaction between sulfur dioxide and chlorine gas in the presence of UV light, and how does this relate to the activation energy of the reaction?

answered Feb 22 in PhotoChemistry

1 answer 79 views

What is the enthalpy change (in kJ/mol) for the combustion of propane (C3H8) using Hess's Law? Use the following information: C3H8 + 5O2 → 3CO2 + 4H2O ∆H = −2043 kJ/mol 2CO + O2 → 2CO2 ∆H = −566 kJ/mol H2 + 1/2O2 → H2O ∆H = −285.8 kJ/mol

asked Feb 20 in ThermoChemistry

1 answer 81 views

What is the electronegativity difference between a nitrogen atom (3.04) and a chlorine atom (3.16)?

answered Feb 20 in Chemical bonding

1 answer 83 views

How does the chemical composition of microplastics affect their toxicity and ability to bioaccumulate in marine organisms?

answered Feb 18 in Environmental Chemistry

1 answer 85 views

How does the arrangement of atoms in a crystal structure affect the physical properties of a material? Provide three specific examples of how crystallographic properties impact the behavior of materials in different chemical reactions.

answered Feb 17 in Physical Chemistry

1 answer 84 views

How does the surface modification of polymers affect their hydrophobicity and adhesion properties?

asked Feb 17 in Surface Chemistry

1 answer 78 views

What is the impact of supramolecular assemblies on the photochemical properties of organic molecules?

asked Feb 17 in PhotoChemistry

1 answer 96 views

What are the factors that affect protein folding, and how can changes in these factors impact the overall structure and function of the protein?

answered Feb 14 in BioChemistry

1 answer 75 views

How can we predict the solubility of inorganic salts in water based on their chemical properties such as ionic charge, size, and polarizability?

asked Feb 14 in Inorganic Chemistry

1 answer 86 views

How can the yield of carbon nanotube synthesis be optimized using different methods and conditions?

asked Feb 14 in Materials Chemistry

1 answer 75 views

How can the synthesis of magnetic nanoparticles be optimized for use in water purification technologies, with a focus on increased efficiency and selectivity in the removal of heavy metal ions? Additionally, how can the characterization of these materials be improved to better understand their behavior in complex water matrices and optimize their performance in real-world applications?

answered Feb 11 in Materials Chemistry

1 answer 146 views

How can the synthesis and characterization of novel materials be optimized for energy storage applications, specifically for the development of high-capacity and long-lasting batteries?

answered Feb 11 in Materials Chemistry

1 answer 109 views

How can improving the polymer electrolyte in a lithium-ion battery affect its performance and stability over time?

answered Feb 5 in Polymer Chemistry

1 answer 87 views

How can a distillation column be designed to effectively separate a binary mixture of ethanol and water with a specific composition, using commonly available materials and maximizing efficiency while minimizing heat loss?

asked Feb 4 in Chemical engineering

1 answer 125 views

What is the most favorable reaction pathway for the Fischer-Tropsch synthesis of methane on a Cu surface using Density Functional Theory calculations of catalytic reactions?

answered Jan 31 in Computational Chemistry

1 answer 124 views

What are the top three most commonly missed topics on a high school chemistry exam and how can a student adequately prepare for these topics?

asked Jan 30 in Chemical education

1 answer 138 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 56 views

How can the analysis of X-ray fluorescence spectra be used to identify the chemical composition and concentration of elements in a given sample, and what factors influence the accuracy and precision of this technique?

asked Jan 29 in Analytical Chemistry

1 answer 80 views

Based on the intermolecular forces present in a substance, predict which substance would have a higher boiling point: methane or ethane?

asked Jan 23 in Chemical bonding

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