Recent activity by REHJon915716

1 answer 17 views

What is the optimal reaction temperature and time required for the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine to achieve maximum yield and purity?

asked 3 days ago in Chemical synthesis

1 answer 34 views

How does the molecular weight distribution affect the rheological properties of polymer melts?

asked 4 days ago in Polymer Chemistry

1 answer 27 views

What is the coordination environment and oxidation state of the metal ion in the active site of the metalloprotein myoglobin? How does this coordination environment allow myoglobin to efficiently bind and transport oxygen in the body?

answered 4 days ago in Coordination Chemistry

1 answer 36 views

How do the electronic structures and properties of transition metal complexes change when different ligands are bound to the metal center, and how can we predict these changes using ab initio computational methods?

answered 5 days ago in Computational Chemistry

1 answer 17 views

What is the bond order of a nitrogen molecule (N2)?

asked Feb 18 in Chemical bonding

1 answer 34 views

What is the predicted color of a compound containing a transition metal ion with an oxidation state of +3 in an octahedral geometry?

asked Feb 14 in Inorganic Chemistry

1 answer 25 views

How do persistent organic pollutants (POPs) affect the pH levels of soil and water in their respective environments?

asked Feb 14 in Environmental Chemistry

1 answer 36 views

What would be the effect on the degree of ionization of a weak acid like acetic acid in a solution containing it along with 1 M of hydrochloric acid?

asked Feb 13 in Chemical equilibrium

1 answer 30 views

What type of intermolecular forces are present in a liquid sample of ethanol?

asked Feb 13 in Chemical bonding

1 answer 38 views

How do the electronic and optical properties of graphene differ from those of other 2D materials such as MoS2, and what factors contribute to these differences?

answered Feb 13 in Quantum Chemistry

1 answer 31 views

How does the excessive use of fertilizers contribute to eutrophication in aquatic ecosystems and what are the potential consequences for the environment and human health?

asked Feb 13 in Environmental Chemistry

1 answer 9 views

How can we design drugs for the treatment of Alzheimer's disease that can effectively target and inhibit the activity of beta-amyloid protein aggregation in the brain?

asked Feb 12 in Medicinal Chemistry

1 answer 11 views

How can we design a wastewater treatment system for a particular industrial process that is known to release high levels of heavy metals, such as lead and mercury, into the environment?

answered Feb 12 in Chemical engineering

1 answer 39 views

How to design a feasible and economical system that produces pure hydrogen fuel with a high yield while minimizing energy consumption, by utilizing the principles of chemical engineering and taking into account the potential impact on the environment?

asked Feb 12 in Chemical engineering

1 answer 43 views

How do Chlorofluorocarbons (CFCs) specifically degrade the ozone layer and what chemical reactions occur in the process?

asked Feb 12 in Environmental Chemistry

1 answer 9 views

How can the synthesis of polymer-based superabsorbent materials be optimized to achieve the highest absorption capacity and stability under different environmental conditions?

asked Feb 11 in Polymer Chemistry

1 answer 41 views

How can the properties of a polymer-based smart material be optimized using different synthesis techniques and copolymerization strategies?

answered Feb 10 in Polymer Chemistry

1 answer 33 views

Calculate the standard enthalpy change for the combustion of ethene gas (C2H4(g)) to form carbon dioxide gas (CO2(g)) and water vapor (H2O(g)), given the following thermochemical equations: C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔH°=-1411 kJ/mol2H2(g) + O2(g) → 2H2O(g) ΔH°=-484 kJ/mol

asked Feb 3 in Chemical thermodynamics

1 answer 71 views

What is the concentration of lead (Pb) in a water sample collected from a industrial site using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry

1 answer 49 views

How can the concentration of copper ion (Cu2+) in a given sample be quantified using polarography?

asked Jan 29 in Analytical Chemistry

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