Recent activity by PearlineNewe

1 answer 28 views

How can gel permeation chromatography (GPC) be used to determine the molecular weight distribution of a polymer sample? What are the advantages and limitations of using GPC compared to other polymer characterization techniques?

asked 11 hours ago in Polymer Chemistry

1 answer 38 views

Design a retrosynthetic pathway to synthesize ibuprofen starting from methylcyclohexane. Show all necessary reagents and the key steps involved in the synthesis.

answered 1 day ago in Organic Chemistry

1 answer 32 views

Calculate the standard enthalpy change (in kJ/mol) for the neutralization reaction of hydrochloric acid (HCl) and sodium hydroxide (NaOH) using the following information: HCl (aq) + NaOH (aq) → NaCl (aq) + H2O(l)ΔHf° (kJ/mol): HCl (aq) = -167.2 NaOH (aq) = -469.2 NaCl (aq) = -407.3 H2O(l) = -285.8

answered 2 days ago in Chemical thermodynamics

1 answer 66 views

How can we use Raman spectroscopy to identify the specific compound and its concentration in a given unknown sample? What are the advantages and limitations of using Raman spectroscopy over other analytical techniques for identifying specific compounds in a sample?

asked 6 days ago in Analytical Chemistry

1 answer 46 views

How does the Meaning-Making Theory explain end-of-life experiences?

answered Jan 20 in Psychology

1 answer 32 views

How does the social support theory view the role of social support in coping with trauma?

asked Jan 17 in Psychology

0 answers 18 views

When did Gestalt psychology lose its dominance?

asked Jan 17 in Psychology

1 answer 26 views

What is the preoperational stage?

answered Jan 14 in Psychology

1 answer 5 views

What is it that surrounds cells and serve to keep the insides separated from the outsides?

answered Jan 6 in Science

1 answer 11 views

In celsius, what is the boiling point of water?

answered Dec 31, 2024 in Science

1 answer 25 views

Eukaryotic cells undergo what kinds of divisions that more primitive cells do not?

answered Dec 30, 2024 in Science

1 answer 42 views

What occurs when there is little to no rain in a period of time?

asked Dec 27, 2024 in Science

1 answer 25 views

Eggs are produced in what organs and, upon fertilization, develop in what other organ?

answered Dec 27, 2024 in Science

1 answer 52 views

What force provides resistance whenever two surfaces are in contact?

asked Dec 27, 2024 in Science

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