Recent activity by JuanitaShear

1 answer 22 views

What is the mechanism of polymerization involved in the formation of polyethylene? Provide a detailed explanation of the process, including the reaction equation and the role of the catalyst.

asked Feb 20 in Organic Chemistry

1 answer 19 views

What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) at room temperature?

answered Feb 19 in Surface Chemistry

1 answer 28 views

How does the concentration of a catalyst affect the reaction rate of the decomposition of hydrogen peroxide?

asked Feb 18 in Chemical kinetics

1 answer 22 views

How does the choice of exchange-correlation functional impact the accuracy of Density Functional Theory (DFT) calculations for the catalytic hydrodeoxygenation reaction of phenol on ruthenium catalysts?

answered Feb 18 in Computational Chemistry

1 answer 31 views

What is the mechanism of action for sunscreen agents and how do they protect the skin from UV radiation?

asked Feb 14 in PhotoChemistry

1 answer 29 views

What is the difference between primary, secondary and tertiary amines based on their structures and properties? Provide examples of each type and explain their relevance in organic synthesis.

answered Feb 14 in Organic Chemistry

1 answer 43 views

How does excess phosphorus and nitrogen in water bodies contribute to eutrophication, and what are the potential negative effects on the aquatic ecosystem?

answered Feb 13 in Environmental Chemistry

1 answer 33 views

What factors affect the stability of emulsions, and how can we optimize these factors to enhance the stability of an emulsion for a particular application?

answered Feb 13 in Surface Chemistry

1 answer 32 views

How can the ratio of chelating agent to metal ions be optimized in order to maximize the recovery efficiency of valuable metals from electronic waste using the solvent extraction method?

answered Feb 10 in Chemical engineering

1 answer 52 views

How can the principles of medicinal chemistry be applied to develop new treatments for emerging viral infections like Zika virus, COVID-19, or other deadly viruses?

answered Feb 10 in Medicinal Chemistry

1 answer 36 views

How can the electrolyte characteristics of polymer batteries be manipulated to improve battery performance and efficiency?

asked Feb 7 in Polymer Chemistry

1 answer 30 views

How can computational techniques such as molecular docking be used to identify potential inhibitors of a specific protein-protein interaction involved in a disease process?

answered Feb 5 in Computational Chemistry

1 answer 33 views

How can limited access to laboratory equipment and facilities affect the quality of scientific research and education in the field of chemistry?

answered Feb 5 in Chemical education

1 answer 23 views

Consider the reaction:$$\mathrm{N_2(g) + 3H_2(g) <=> 2NH_3(g)}$$At a certain temperature, the equilibrium constant $K_c$ for this reaction is $5.6 \times 10^{-5}$. If a reaction vessel initially contains only $\mathrm{0.10\,mol}$ of $\mathrm{N_2}$ and $\mathrm{0.20\,mol}$ of $\mathrm{H_2}$, what will be the equilibrium concentrations of $\mathrm{N_2}$, $\mathrm{H_2}$, and $\mathrm{NH_3}$ once the reaction reaches equilibrium?

asked Feb 3 in Chemical reactions

1 answer 55 views

Calculate the standard free energy change for the following redox reaction:2HgO(s) → 2Hg(l) + O2(g)Given: ΔG°f (HgO) = -90.83 kJ/molΔG°f (Hg) = 0 kJ/mol ΔG°f (O2) = 0 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 70 views

What are the key structural and chemical properties that differentiate biomaterials used in tissue engineering applications from those used in other types of medical devices, and how do these properties affect their performance in vivo?

asked Jan 31 in Materials Chemistry

1 answer 70 views

What is the boiling point of aluminum chloride (AlCl3) when the atmospheric pressure is 1 atm? (Assuming the compound is in its standard state.)

answered Jan 31 in Inorganic Chemistry

1 answer 71 views

What is the effect on the equilibrium position of the following reaction if water is added to the system: 2H2(g) + O2(g) ⇌ 2H2O(g) Explain your answer using Le Chatelier's principle.

answered Jan 30 in Chemical equilibrium

1 answer 103 views

Identify whether the following solids are ionic, covalent, or metallic: (i) NaCl, (ii) CO2, (iii) Fe, (iv) SiO2, (v) Ag. Justify your answer with proper reasoning for each compound.

asked Jan 30 in Inorganic Chemistry

1 answer 75 views

What is the concentration of copper ions in a sample of water collected from a river using voltammetry?

asked Jan 30 in Analytical Chemistry

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