Recent activity by AndyDurack9

1 answer 33 views

What is the chemical mechanism by which Chlorofluorocarbons (CFCs) react with ozone molecules in the atmosphere, leading to the depletion of the ozone layer and subsequent environmental effects?

asked 3 days ago in Environmental Chemistry

1 answer 31 views

How does the chemical composition and molecular weight of a polymer affect its properties and suitability for 3D printing applications?

asked 3 days ago in Materials Chemistry

1 answer 22 views

What is the bond strength of carbon dioxide and how does it compare to the bond strength of methane?

asked 4 days ago in Chemical bonding

1 answer 43 views

How can the production process of fragrances be improved to increase yield and reduce waste using chemical engineering principles?

answered Feb 10 in Chemical engineering

1 answer 10 views

How can small molecule inhibitors be designed to target specific molecules involved in the pathogenesis of autoimmune diseases such as rheumatoid arthritis?

answered Feb 5 in Medicinal Chemistry

1 answer 44 views

How can a chemical engineering student design an efficient and cost-effective system for the treatment of industrial wastewater that effectively removes contaminants and meets environmental regulations? Additionally, how can the engineer optimize the design to minimize energy and chemical usage, as well as reduce waste production and disposal costs?

answered Feb 4 in Chemical engineering

1 answer 54 views

Calculate the entropy change (∆S) for the reaction of 2 moles of solid NH4Cl with 1 mole of NaOH in a coffee cup calorimeter at a constant temperature of 25°C. The reaction takes place in 100 mL of water and produces 2 moles of NH3 and 1 mole of NaCl in solution. Assume that the specific heat capacity of water is 4.18 J/g·K and that the final solution temperature after the reaction is complete is 25°C.

answered Jan 23 in Chemical thermodynamics

1 answer 62 views

What type of functional group is present in the compound that has an IR stretch at 1700 cm^-1 and an NMR peak at 9 ppm in the ^1H NMR spectrum?

answered Jan 21 in Organic Chemistry

0 answers 51 views

When did Harry Stack Sullivan develop the theory of interpersonal psychoanalysis?

asked Jan 15 in Psychology

1 answer 30 views

What does the acronym CBT stand for?

answered Jan 14 in Psychology

1 answer 42 views

Which atomic model shows that the distances of electrons from the nucleus is not a fixed value?

asked Jan 8 in Science

1 answer 63 views

What is it called when a new species arises without geographic separation?

answered Jan 6 in Science

1 answer 38 views

What are the two best known baryons?

asked Jan 6 in Science

1 answer 33 views

Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and what else?

asked Dec 30, 2024 in Science

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