Recent activity by AnnPruett84

1 answer 29 views

How does the size and shape of metal ions affect the stability and selectivity of metal-organic frameworks?

1 answer 31 views

How does the presence of UV rays induce the formation of pyrimidine dimers in newly synthesized strands during DNA replication, what are the consequences of having these pyrimidine dimers, and what types of mechanisms do cells employ to repair them?

asked Feb 22 in BioChemistry

1 answer 33 views

How does the initial orientation of reactant molecules affect the rate of a chemical reaction? Design an experiment to investigate this effect and analyze the results.

asked Feb 20 in Chemical kinetics

1 answer 30 views

What is the Faraday constant and how can it be calculated using electrochemical cells?

asked Feb 20 in ElectroChemistry

1 answer 35 views

What is the relationship between the electronic band structure and the optical properties of graphene, and how does this compare to other 2D materials?

asked Feb 20 in Quantum Chemistry

1 answer 29 views

What is the balanced chemical equation for the synthesis of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas?

answered Feb 17 in Chemical synthesis

1 answer 23 views

How does the addition of different types and amounts of salts affect the ionic conductivity of a polymer electrolyte used in lithium-ion batteries?

asked Feb 17 in Polymer Chemistry

1 answer 38 views

How do nitrogen and phosphorus contribute to the harmful algal blooms in the nearby water bodies and what strategies can be used to control or prevent their presence?

asked Feb 13 in Environmental Chemistry

1 answer 62 views

How can the surface chemistry of food and beverage processing be manipulated for better product quality and longer shelf life?

answered Feb 11 in Surface Chemistry

1 answer 32 views

How can the electrical conductivity and stability of conductive polymers be improved for use in electronic devices?

answered Feb 7 in Polymer Chemistry

1 answer 34 views

How can molecular docking studies be used to design more effective and specific drugs?

answered Feb 5 in Computational Chemistry

1 answer 116 views

What is the three-dimensional structure of a molecule that has one chiral center, and what is the relationship between its enantiomers?

answered Jan 30 in Organic Chemistry

1 answer 107 views

What is the concentration of iron (Fe) in a given water sample using spectrophotometry with a known absorbance value of 0.52 and molar absorbivity coefficient of 1.20 x 10^4 M^-1 cm^-1 at a wavelength of 565 nm?

answered Jan 30 in Analytical Chemistry

1 answer 113 views

How can we use UV-Vis spectroscopy to identify the presence of specific functional groups (such as carbonyl, aromatic, or alcohol groups) in a given compound? Can we determine the concentration of these functional groups using UV-Vis spectroscopy? How can we compare the UV-Vis spectra of different functional groups in order to distinguish them from one another?

answered Jan 30 in Analytical Chemistry

1 answer 69 views

How can Raman spectroscopy be used to determine the presence of a specific compound in a mixture of similar compounds? Specifically, how can the unique Raman spectra of the target compound be identified and distinguished from those of other compounds in the mixture, and what is the minimum concentration of the target compound that can be detected using this technique?

answered Jan 29 in Analytical Chemistry

1 answer 77 views

A chemical engineer needs to separate a mixture of ethanol and water using a distillation column. The feed to the column has 30 mol% ethanol and 70 mol% water, and the desired distillate composition is 95 mol% ethanol. The feed rate is 100 kmol/hour and the reflux ratio is 2. Calculate the number of theoretical trays required in the column to achieve the desired distillate composition.

answered Jan 22 in Chemical engineering

1 answer 78 views

What is the frequency of sound waves perceived by humans?

asked Jan 20 in Psychology

1 answer 47 views

When was the DSM-5 released?

answered Jan 20 in Psychology

1 answer 90 views

According to the social learning theory, what is the role of reinforcement in shaping behaviour?

answered Jan 20 in Psychology

1 answer 34 views

Please evaluate the ethics of using online surveys in research.

answered Jan 20 in Psychology

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