Recent activity by CarrieMadiso

1 answer 34 views

How does the rate of the reaction between hydrochloric acid and sodium thiosulfate change as the temperature increases?

asked Feb 22 in Chemical kinetics

1 answer 23 views

How does the crystallization process affect the morphology of polymers and its mechanical properties?

1 answer 36 views

What is the bond energy and bond strength of a chlorine molecule? Provide neutron scattering data to support your answer.

asked Feb 18 in Chemical bonding

1 answer 29 views

How does the binding of metal ions to specific amino acid residues in metalloenzymes and metalloproteins affect their catalytic activity and overall function?

answered Feb 17 in Coordination Chemistry

1 answer 49 views

How does the arrangement and structure of supramolecular assemblies affect their photochemical properties? Provide examples of supramolecular assemblies and their corresponding photochemical properties.

asked Feb 17 in PhotoChemistry

1 answer 37 views

How does temperature affect the molecular ordering and behavior of liquid crystals using Monte Carlo simulations?

asked Feb 17 in Computational Chemistry

1 answer 74 views

How can the properties of polymer-based optical materials be controlled and optimized for various applications, such as in optical sensors or devices?

asked Feb 10 in Polymer Chemistry

1 answer 48 views

How can the pharmacodynamics of a drug be investigated and optimized for therapeutic efficacy while minimizing side effects in the human body?

asked Feb 10 in Medicinal Chemistry

1 answer 14 views

How can the efficiency of the production process of paints and coatings be improved while minimizing the negative impact on the environment?

asked Feb 7 in Chemical engineering

1 answer 43 views

How can the efficiency of a solar cell be improved by synthesizing and characterizing new materials for use as the absorber layer? Specifically, what properties should the new material possess to achieve optimal energy conversion and what are the best methods for characterizing these properties?

answered Feb 7 in Materials Chemistry

1 answer 41 views

How can the bandgap of a semiconductor be calculated and manipulated for optimal performance in electronic devices?

asked Feb 6 in Materials Chemistry

1 answer 30 views

How can Computational chemistry and molecular modeling be used to predict the properties of a new drug candidate?

answered Feb 6 in Physical Chemistry

1 answer 43 views

How can knowledge of chemistry principles be applied to real-world scenarios such as the production and use of common household items such as laundry detergent or shampoo? What are some of the key chemical processes involved in their creation and use?

asked Feb 5 in Chemical education

1 answer 72 views

Calculate the standard enthalpy change for the reaction: Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g) Given the following standard enthalpy of formation values: ΔHf° [Fe2O3(s)] = -824 kJ/mol ΔHf° [CO(g)] = -110 kJ/mol ΔHf° [CO2(g)] = -393.5 kJ/mol ΔHf° [Fe(s)] = 0 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 64 views

Calculate the standard enthalpy change for the reaction between calcium oxide (CaO) and water (H2O) to form calcium hydroxide (Ca(OH)2), given that all species are in their standard state and that the balanced chemical equation is:CaO(s) + H2O(l) → Ca(OH)2(s)The standard enthalpies of formation of CaO(s), H2O(l) and Ca(OH)2(s) are -635.1 kJ/mol, -285.8 kJ/mol, and -986.2 kJ/mol respectively.

answered Feb 3 in Chemical thermodynamics

1 answer 82 views

Calculate the standard enthalpy change for the fusion of 100 grams of ice at 0°C to liquid water at 0°C. The specific heat capacity of water is 4.184 J/g°C, the standard enthalpy of fusion of water is 6.01 kJ/mol, and the molar mass of water is 18.015 g/mol. Assume all heat absorbed is used to melt the ice and the temperature remains constant.

answered Feb 3 in Chemical thermodynamics

1 answer 93 views

What vibrational frequencies and infrared spectra results would be obtained for the molecule acetic acid (CH3COOH) using the quantum mechanical method of calculation?

answered Jan 31 in Quantum Chemistry

1 answer 87 views

What is the concentration of iron (Fe) in a sample of river water using spectrophotometry at a wavelength of 510 nm? Given that the absorbance value of the sample at 510 nm is 0.42, and the molar absorptivity of iron (Fe) at that wavelength is 18,000 M^-1 cm^-1.

asked Jan 30 in Analytical Chemistry

1 answer 134 views

What is the concentration of a solution containing an unknown amount of lead ions if it requires 25 milliliters of 0.1 M potassium iodide (KI) solution to titrate completely in a polarographic analysis?

answered Jan 30 in Analytical Chemistry

1 answer 125 views

How can we use polarography to measure the concentration of lead (II) ions in a water sample obtained from a contaminated site?

answered Jan 30 in Analytical Chemistry

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