Recent activity by UrsulaHuitt

1 answer 28 views

How can Fourier-transform infrared spectroscopy (FTIR) be used to characterize the chemical structure of polymers? Provide an example of a specific polymer and discuss the relevant spectral features that would be observed in an FTIR spectrum.

asked 6 days ago in Polymer Chemistry

1 answer 25 views

Here's a precise problem for a chemistry student to solve based on the subtopic Rearrangement reactions:What products form from the acid-catalyzed rearrangement of 2-methyl-3-butene to form 3-methyl-1-butene? Use mechanisms to explain why this rearrangement occurs.

answered 6 days ago in Organic Chemistry

1 answer 54 views

Calculate the HOMO-LUMO gap of a conjugated polymer consisting of 50 monomers, assuming that the polymer is periodic in the z-direction, using a density functional theory (DFT) program of your choice. Also, determine the absorption spectrum of the polymer in the UV-vis region, and predict its color in solution.

asked Jan 23 in Quantum Chemistry

1 answer 70 views

A chemical engineering company has a mixture of ethanol and water with a concentration of 30% ethanol to separate using a distillation column. The company needs to obtain a concentration of 80% ethanol in the distillate at a reflux ratio of 3. Calculate the number of theoretical plates required in the column for the separation, assuming no vapor or liquid bypass, and that the minimum vapor velocity is maintained.

asked Jan 22 in Chemical engineering

1 answer 80 views

What is the major product formed in the dehydration of 1-methylcyclohexanol with concentrated sulfuric acid as a catalyst?

asked Jan 21 in Organic Chemistry

1 answer 24 views

Who created the concept of character strengths?

asked Jan 17 in Psychology

1 answer 24 views

How do existential psychologists view optimism and pessimism?

answered Jan 15 in Psychology

1 answer 25 views

What is the relationship between adolescent development and substance use?

asked Jan 14 in Psychology

1 answer 20 views

What is the microtubule-organizing center found near the nuclei of animal cells?

answered Jan 7 in Science

1 answer 47 views

What is the common name of mixtures of hydrocarbons that formed over millions of years from the remains of dead organisms?

asked Jan 6 in Science

1 answer 9 views

The right side of the heart collects what type of blood from the body?

asked Jan 2 in Science

1 answer 26 views

Name the process that produces many copies of a certain gene.

asked Dec 27, 2024 in Science

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