Recent activity by MariamPaine

1 answer 27 views

What is the optimal ratio of adipic acid to hexamethylenediamine that should be used in the synthesis of nylon-6,6 for maximum yield?

asked Feb 21 in Chemical synthesis

1 answer 25 views

What is the most efficient method for synthesizing polyvinyl alcohol using vinyl acetate monomer as the starting material? What are the key factors that affect the yield and properties of the final product, and how can they be optimized?

asked Feb 21 in Chemical synthesis

1 answer 31 views

How does the energy of the excited state dynamics of a molecule change as a function of its molecular geometry, and how can ab initio calculations be utilized to predict this behavior?

answered Feb 20 in Computational Chemistry

1 answer 31 views

How does the concentration of surfactants affect the surface tension of a given aqueous solution at different temperatures?

answered Feb 19 in Surface Chemistry

1 answer 43 views

What is the boiling point of sodium chloride (NaCl) at a pressure of 1 atm?

answered Feb 14 in Inorganic Chemistry

1 answer 69 views

What is the effect of increasing concentration of the product on reaction rate and how does it relate to collision theory?

asked Feb 13 in Chemical kinetics

1 answer 29 views

How do different cooking methods affect the levels of pesticide residues in food?

asked Feb 12 in Environmental Chemistry

1 answer 67 views

How can the process for the production of nitrogen gas be optimized using the pressure swing adsorption technique in an industrial setting?

asked Feb 10 in Chemical engineering

1 answer 32 views

How can the performance of polymer-based membranes for water treatment be improved by manipulating their chemical structure and properties?

asked Feb 10 in Polymer Chemistry

1 answer 35 views

How can the mechanical and thermal properties of polymer-based composites be optimized for their efficient use in aerospace applications?

asked Feb 7 in Polymer Chemistry

1 answer 35 views

How can the chemical engineering principles be applied to develop a feasible process for the large-scale production of insulin, a widely used pharmaceutical drug for the treatment of diabetes?

answered Feb 6 in Chemical engineering

1 answer 29 views

How can chemistry teachers make the subject more interesting and engaging for students who lack interest in the subject?

asked Feb 6 in Chemical education

1 answer 30 views

How can quantum computing be utilized in quantum chemistry to efficiently calculate molecular properties and develop new drugs?

asked Feb 5 in Quantum Chemistry

1 answer 65 views

Calculate the pH of a 0.1 M solution of acetic acid (CH3COOH) given that its dissociation constant Ka is 1.8x10^-5.

answered Feb 3 in Chemical reactions

1 answer 69 views

What is the effect of changing the surface functionalization of gold nanoparticles on their stability and reactivity in water, as predicted by molecular dynamics simulations?

asked Feb 3 in Computational Chemistry

1 answer 98 views

What is the composition and concentration of the components in a mixture of gasoline using gas chromatography?

asked Jan 30 in Analytical Chemistry

1 answer 45 views

What functional group(s) are present in a compound with the molecular formula C3H6O, as determined by infrared spectroscopy?

answered Jan 30 in Analytical Chemistry

1 answer 74 views

Calculate the enthalpy of vaporization for water if 50.0 g of water is completely vaporized at its boiling point (100°C) using 107 kJ/mol as the heat of vaporization of water.

answered Jan 23 in ThermoChemistry

1 answer 46 views

A student wants to find the equilibrium constant for the following reaction at a temperature of 298 K:2NO(g) + Cl2(g) ⇌ 2NOCl(g)The student measures the equilibrium concentrations to be [NO] = 0.050 M, [Cl2] = 0.025 M, and [NOCl] = 0.080 M. What is the equilibrium constant (Kc) for the reaction at this temperature?

answered Jan 22 in Chemical reactions

1 answer 87 views

A chemistry student wants to know how the equilibrium of a reaction will be affected by an increase in temperature. The reaction studied is N2(g) + 3H2(g) ↔ 2NH3(g) and has an equilibrium constant (Kc) of 3.5 x 10^-5 at a certain temperature. If the temperature is increased, what will happen to the concentration of NH3 at equilibrium?

asked Jan 22 in Chemical reactions

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