Recent activity by HoseaLafleur

1 answer 41 views

How can Dynamic Mechanical Analysis (DMA) be used to determine the glass transition temperature of a polymer? Provide a step-by-step explanation of the DMA technique and its application to polymer characterization.

answered Feb 5 in Polymer Chemistry

1 answer 50 views

What is the reactivity of an alkyne compared to an alkane or alkene, and how can this reactivity be utilized in organic synthesis reactions? Provide an example reaction that demonstrates this reactivity.

answered Jan 31 in Organic Chemistry

1 answer 70 views

What novel drug delivery system could be designed for an anti-cancer drug that typically has low bioavailability and improved efficacy, using principles of medicinal chemistry and optimization techniques?

answered Jan 30 in Medicinal Chemistry

1 answer 40 views

A chemistry student needs to determine the percentage of calcium carbonate (CaCO3) present in a mixture of calcium carbonate and calcium phosphate. The student has the following information: A 1.00-gram sample of the mixture was dissolved and reacted with excess hydrochloric acid (HCl), producing 0.236 grams of carbon dioxide (CO2) gas. The balanced chemical equation for the reaction is: CaCO3 + 2HCl → CaCl2 + CO2 + H2O. The student also knows that the molecular weight of CaCO3 is 100.09 g/mol and that of Ca3(PO4)2 is 310.18 g/mol. What is the percentage of calcium carbonate in the mixture?

answered Jan 22 in Analytical Chemistry

1 answer 31 views

When was the attribution theory developed?

asked Jan 20 in Psychology

1 answer 47 views

Who developed the relative deprivation theory?

asked Jan 15 in Psychology

1 answer 23 views

What is the Oedipus complex as per psychoanalytic theory?

asked Jan 14 in Psychology

1 answer 28 views

Where does the stratosphere get most of its heat?

asked Jan 8 in Science

1 answer 10 views

Why are two different minerals considered different though they have the same chemical composition?

asked Jan 8 in Science

1 answer 23 views

Which reaction between alkyl halides and ammonia makes alkylamines?

asked Jan 8 in Science

1 answer 36 views

Fitness and natural selection are parts of what theory that might describe how organisms change over time?

asked Dec 30, 2024 in Science

1 answer 39 views

Diamond is extremely hard because of the strong bonding between ______ in all directions?

answered Dec 30, 2024 in Science

1 answer 17 views

Bacteria break down the remains of digested food through a processed called what?

answered Dec 30, 2024 in Science

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