Recent activity by MatthewStore

1 answer 22 views

What is the most efficient and eco-friendly method for synthesizing metal nanoparticles with a narrow size distribution and high stability, and how does the synthesis route affect the physical and chemical properties of the resulting nanoparticles?

asked Feb 21 in Materials Chemistry

1 answer 39 views

What is the mechanism involved in the catalytic reaction of hydrogenation of ethylene over a platinum catalyst, and how does the morphology and crystallographic orientation of the platinum catalyst affect its activity and selectivity?

answered Feb 20 in Surface Chemistry

1 answer 21 views

How does the coordination environment around the central metallic ion affect the electronic and optical properties of metalloporphyrins and metallophthalocyanines?

asked Feb 19 in Coordination Chemistry

1 answer 34 views

What is the bond strength of a nitrogen molecule? Provide an explanation of how you arrived at your answer based on the bond type present in the molecule.

answered Feb 18 in Chemical bonding

1 answer 34 views

What is the bond order of the nitrogen molecule (N2) in its ground state?

answered Feb 18 in Chemical bonding

1 answer 33 views

How does the arrangement of atoms in a crystal lattice affect the properties of the material? Provide examples of materials where the crystal structure plays a significant role in its properties.

answered Feb 17 in Physical Chemistry

1 answer 28 views

How does the addition of nanoclay particles affect the mechanical properties of a polymer nanocomposite?

answered Feb 17 in Polymer Chemistry

1 answer 54 views

What is the role of metal ions in the catalytic activity of enzymes? Provide examples of metalloproteins, their metal centers, and their respective chemical reactions.

asked Feb 13 in Coordination Chemistry

1 answer 55 views

How do the industrial activities and transportation sources contribute to the emission of volatile organic compounds (VOCs) in urban areas and what is their impact on indoor and outdoor air quality?

answered Feb 13 in Environmental Chemistry

1 answer 10.6k views

What are the hybrid orbitals present in methane (CH4)?

asked Feb 13 in Chemical bonding

1 answer 28 views

How can we design a drug that targets the mutation responsible for sickle cell anemia, while avoiding harm to healthy cells and tissues in the body?

asked Feb 12 in Medicinal Chemistry

1 answer 35 views

How can the photochemical properties of transition metal complexes be modified by changing the ligands coordinated to the metal center? Compare and contrast the photochemistry of two different transition metal complexes with different ligands and explain the observed differences in their reactivity patterns.

asked Feb 10 in PhotoChemistry

1 answer 45 views

How can the optical properties of glasses be improved for use in advanced applications such as fiber optic communication, laser technology, and medical equipment?

asked Feb 10 in Materials Chemistry

1 answer 59 views

How can the chemical properties of liquid crystals be optimized to enhance their performance in display technology, particularly in terms of brightness, contrast, and response time?

asked Feb 6 in Materials Chemistry

1 answer 73 views

Given the reaction:2HgO(s) → 2Hg(l) + O2(g)Calculate the standard enthalpy change ($\Delta H$) and standard entropy change ($\Delta S$) at 298 K, if the standard enthalpy of formation of HgO(s), Hg(l), and O2(g) are -90.8 kJ/mol, 0 kJ/mol, and 0 kJ/mol, respectively.

asked Feb 4 in Inorganic Chemistry

1 answer 91 views

Determine the standard enthalpy change for the reaction: Fe2O3 (s) + 3CO (g) → 2Fe (s) + 3CO2 (g)given the following values of standard enthalpy of formation:ΔHf° [Fe2O3 (s)] = -824 kJ/mol ΔHf° [CO2 (g)] = -393.5 kJ/mol ΔHf° [CO (g)] = -110.5 kJ/mol ΔHf° [Fe (s)] = 0 kJ/mol

asked Feb 4 in Chemical thermodynamics

1 answer 75 views

Calculate the standard enthalpy change for the vaporization of 100 g of water at 100°C given that the enthalpy of vaporization of water is 40.7 kJ/mol.

answered Feb 3 in Chemical thermodynamics

1 answer 81 views

How does changing the structure of a biomaterial affect its mechanical properties and ability to support cell growth for use in tissue engineering applications?

asked Feb 3 in Materials Chemistry

1 answer 53 views

How does changing the concentration of reactants or products affect the equilibrium position of a chemical reaction? Provide a specific example to support your answer.

asked Feb 3 in Chemical equilibrium

1 answer 110 views

How does the drug Aspirin exert its anti-inflammatory effect at a molecular level?

asked Jan 31 in Medicinal Chemistry

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