Recent activity by TwylaArledge

1 answer 33 views

What is the coordination number and geometry of the metal ion in the active site of the metalloprotein myoglobin? How does this coordination environment influence the protein's function as an oxygen carrier?

answered Feb 20 in Coordination Chemistry

1 answer 43 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?

asked Feb 20 in Computational Chemistry

1 answer 37 views

What is the effect of temperature on the solubility of a solute in a solvent? Provide experimental evidence to support your answer.

asked Feb 20 in Physical Chemistry

1 answer 26 views

What is the dipole moment of hydrogen chloride (HCl) molecule and in which direction does it point?

asked Feb 19 in Chemical bonding

1 answer 31 views

What is the rate constant for the decomposition of N<sub>2</sub>O<sub>5</sub> at 298 K if the half-life is 15.6 minutes and the initial concentration is 0.1 M?

answered Feb 19 in Physical Chemistry

1 answer 30 views

What is the chemical equation for the synthesis of benzocaine from p-aminobenzoic acid and ethanol, and what are the optimal reaction conditions and procedures for obtaining a high yield of product?

asked Feb 18 in Chemical synthesis

1 answer 36 views

What is the effect of the central metal ion on the spectroscopic properties of metalloporphyrins and metallophthalocyanines? Provide experimental evidence to support your answer.

asked Feb 18 in Coordination Chemistry

1 answer 30 views

What is the surface area of a sample of activated carbon if 10 mL of nitrogen gas is adsorbed by the sample at 0°C and 1 atm pressure, and the BET constant k is 0.25mL/m²?

asked Feb 18 in Surface Chemistry

1 answer 46 views

What is the hybridization of the central atom in the molecule H2SO4?

answered Feb 13 in Inorganic Chemistry

1 answer 52 views

How does doping with other elements affect the superconducting properties of high-temperature superconductors?

asked Feb 12 in Materials Chemistry

1 answer 67 views

How can we design a chemical system for the efficient and cost-effective production of high-quality paints and coatings with environmentally friendly components?

answered Feb 12 in Chemical engineering

1 answer 43 views

What are the different types of isomerism exhibited by coordination compounds and how can we differentiate them experimentally?

asked Feb 12 in Coordination Chemistry

1 answer 70 views

How can the process for producing detergents be optimized to reduce environmental impact without compromising the quality and effectiveness of the final product?

answered Feb 10 in Chemical engineering

1 answer 38 views

How can the optical properties of a polymer-based material be controlled and optimized for specific applications, such as in optical sensors or waveguides?

asked Feb 10 in Polymer Chemistry

1 answer 31 views

How can the electrical conductivity of graphene be improved for its use in electronic devices?

asked Feb 7 in Materials Chemistry

1 answer 38 views

How can pH affect the stability of a colloidal solution, and what are the methods for controlling the coagulation of colloidal particles at different pH values?

answered Feb 5 in Surface Chemistry

1 answer 61 views

Calculate the pH of a buffer solution consisting of 0.1 M acetic acid and 0.1 M sodium acetate, given that the dissociation constant (Ka) of acetic acid is 1.8x10^-5.

asked Feb 3 in Chemical reactions

1 answer 121 views

What are the effects of changing the concentration of polymer solution on the mechanical properties (such as mechanical strength and elasticity) of 3D-printed structures?

answered Jan 31 in Materials Chemistry

1 answer 111 views

What is the concentration of lead (Pb) in a water sample, in units of micrograms per liter (µg/L), if the atomic absorption spectroscopy analysis showed an absorbance value of 0.456 at a wavelength of 283.3 nm?

answered Jan 30 in Analytical Chemistry

1 answer 65 views

Calculate the enthalpy change for the combustion of methane at standard conditions, given the following information:- The enthalpy of formation of CO2(g) is -393.5 kJ/mol.- The enthalpy of formation of H2O(g) is -241.8 kJ/mol.- The enthalpy of formation of CH4(g) is -74.8 kJ/mol.

asked Jan 23 in Chemical reactions

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