Recent activity by ErmelindaSey

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What is the relationship between surface tension and temperature as measured by the pendant drop method?

1 answer 74 views

What is the primary structure of a protein and how does it affect the protein's function?

asked Feb 22 in BioChemistry

1 answer 84 views

How does the presence of electron-donor or electron-acceptor groups in a photovoltaic material affect its photochemical properties, specifically its efficiency in converting light energy to electrical energy?

answered Feb 22 in PhotoChemistry

1 answer 92 views

How does the liver's Phase I and Phase II metabolic reactions affect the efficacy and toxicity of a drug in the body?

answered Feb 20 in Medicinal Chemistry

1 answer 81 views

What is the effect of surface area on the adsorption of a gas by a solid? How would you experimentally determine the relationship between the two? Provide a detailed explanation and methodology for your experimental approach.

asked Feb 19 in Physical Chemistry

1 answer 78 views

What is the bond dissociation energy of the carbon-hydrogen (C-H) bond in methane (CH4)? Show all steps of the calculation and include units.

answered Feb 18 in Chemical bonding

1 answer 92 views

What are some common misconceptions about chemical reactions and equations that students commonly have? How can these misconceptions be corrected to improve understanding and retention of this fundamental chemistry concept?

answered Feb 14 in Chemical education

1 answer 88 views

What is the role of ribosomes in the process of protein synthesis during RNA transcription and translation? Explain the molecular mechanism behind how a ribosome reads the instructions encoded in mRNA and assembles amino acids into a polypeptide chain.

answered Feb 14 in BioChemistry

1 answer 119 views

How can we increase the representation and diversity of underrepresented groups in the chemistry field and address the lack of minorities in leadership positions within chemistry research and academia?

answered Feb 13 in Chemical education

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What are the hybrid orbitals present in methane (CH4)?

answered Feb 13 in Chemical bonding

1 answer 103 views

What is the effect of temperature on the conformational behavior of a polymer chain in a Monte Carlo simulation?

asked Feb 13 in Computational Chemistry

1 answer 68 views

How can the computational analysis of metal-organic frameworks assist in the design of new materials with enhanced gas storage capacities?

answered Feb 6 in Computational Chemistry

1 answer 92 views

How can chemistry students overcome the challenges of limited access to laboratory equipment and facilities while still gaining an in-depth understanding of chemical concepts and effectively applying them to real-world situations?

asked Feb 5 in Chemical education

1 answer 141 views

How do changes in environmental conditions affect the metabolic pathways and molecular networks involved in cellular metabolism? Provide examples using metabolomics and systems biology approaches.

answered Jan 31 in BioChemistry

1 answer 127 views

What strategies can a student use to better understand complex chemical concepts, such as chemical bonding, equilibrium, or thermodynamics?

asked Jan 30 in Chemical education

1 answer 64 views

How can liquid chromatography be used to determine the concentration of a specific compound in a sample? Construct a step-by-step experimental procedure that outlines the necessary equipment, reagents, and techniques to perform this analysis accurately. Additionally, include methods to determine research questions such as: how to interpret peak height, peak tailing, and resolution when analyzing the results of the chromatogram.

answered Jan 29 in Analytical Chemistry

1 answer 77 views

How can capillary electrophoresis be used to accurately determine the concentration of different ions in a given sample?

answered Jan 29 in Analytical Chemistry

1 answer 134 views

An unknown compound is suspected to be a crystal structure of sodium chloride. Using X-ray crystallography techniques, determine if the compound is indeed a sodium chloride crystal structure and calculate the lattice parameters of the crystal.

asked Jan 22 in Physical Chemistry

1 answer 133 views

A student needs to analyze an unknown sample to determine the percent composition of three compounds present in it. The student conducts a combustion reaction to determine the percent of carbon and hydrogen in the sample. The remaining residue is then dissolved in water and the solution is titrated with a standardized silver nitrate solution to determine the chloride ion concentration in the sample. Calculate the percent composition of each compound in the unknown sample using mass balance calculations.

asked Jan 22 in Analytical Chemistry

1 answer 84 views

A sample of a compound contains 28.6% sodium, 46.8% sulfur, and 24.6% oxygen. Determine the empirical formula of this inorganic compound.

asked Jan 22 in Inorganic Chemistry

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