Recent activity by JosetteSarto

1 answer 30 views

What is the effect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid, and how can this relationship be quantified using the Arrhenius equation?

asked Feb 20 in Chemical kinetics

1 answer 26 views

How does the concentration of heavy metals in water affect the growth rate of fish?

answered Feb 19 in Environmental Chemistry

1 answer 22 views

What is the chemical equation for the complete combustion of propane (C3H8) and what are the products produced in this reaction?

asked Feb 18 in Chemical reactions

1 answer 22 views

What is the bond enthalpy of the carbon-hydrogen bond in methane (CH4)?

answered Feb 18 in Chemical bonding

1 answer 24 views

How does the addition of a specific ligand affect the folding kinetics of a certain protein? Use molecular dynamics simulations of protein folding to investigate the effect of various concentrations of the ligand on the folding process of the protein.

answered Feb 17 in Computational Chemistry

1 answer 27 views

How can we use size-exclusion chromatography for determining the molecular weight distribution of polymers?

asked Feb 14 in Polymer Chemistry

1 answer 34 views

How can we use molecular modeling software to predict the behavior of enzymes in various solvent and temperature conditions during a chemical reaction?

asked Feb 13 in Physical Chemistry

1 answer 47 views

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

answered Feb 10 in Polymer Chemistry

1 answer 35 views

How can the presence of heavy metals in water bodies negatively impact the growth and reproduction of fish populations, and what chemical remediation methods can be used to remove heavy metals from bodies of water to prevent aquatic toxicity?

answered Feb 10 in Environmental Chemistry

1 answer 29 views

How can the morphology and structure of new materials be controlled in the synthesis process to optimize their efficiency as absorbers in solar cells?

answered Feb 10 in Materials Chemistry

1 answer 28 views

How can improving the polymer electrolyte in a lithium-ion battery affect its performance and stability over time?

asked Feb 5 in Polymer Chemistry

1 answer 39 views

How can chemistry students effectively learn practical skills and conduct experiments with limited access to laboratory equipment and facilities?

answered Feb 4 in Chemical education

1 answer 18 views

How can a process be developed for the production of 1,4-dioxane using the principles of chemical engineering, and what are the key variables that need to be considered in the design and optimization of the process?

asked Feb 4 in Chemical engineering

1 answer 42 views

Determine the hybridization of the central atom in the molecule SF6.

asked Feb 4 in Inorganic Chemistry

1 answer 45 views

Calculate the resistance of an electrochemical cell given the following parameters: - The cell has a total area of 50 cm² and a separation between the electrodes of 2 cm.- The electrolyte solution has a conductivity of 2.5 × 10⁻⁴ S/cm and a temperature of 25°C.- The electrode on the left side of the cell is made of platinum and has a surface area of 25 cm². The electrode on the right side is made of silver and has a surface area of 25 cm².- The distance between each electrode and the solution is 0.5 cm.

asked Feb 3 in ElectroChemistry

1 answer 83 views

What strategies can be implemented to overcome the limited availability of chemistry textbooks and resources for students in remote or underprivileged areas?

answered Jan 30 in Chemical education

1 answer 54 views

How can Raman spectroscopy be utilized to identify the presence of a specific compound in a sample, and what are the advantages of using Raman spectroscopy compared to other analytical methods?

answered Jan 29 in Analytical Chemistry

1 answer 64 views

Calculate the electronic energy levels and absorption spectra of a quantum dot composed of CdSe with a diameter of 5 nanometers and compare it to a quantum well with the same dimensions. Which structure would have a higher bandgap energy and why?

asked Jan 23 in Quantum Chemistry

1 answer 107 views

A student needs to calculate the resistance of an electrochemical cell that has a concentration of 0.1 M for both copper(II) and zinc(II) ions, using an electrochemical sensor that measures 2.5 volts for the cell. Calculate the resistance of the electrochemical cell at room temperature, given that the Faraday constant is 96485 C/mol and the gas constant is 8.314 J/(mol·K).

answered Jan 22 in ElectroChemistry

1 answer 81 views

A chemistry student wants to determine the enthalpy change of a chemical reaction. They have 25 g of sodium hydroxide and want to mix it with 50 mL of 1.0 M hydrochloric acid. What is the maximum temperature change they can expect to see, assuming constant pressure and perfect heat transfer, and what is the enthalpy change of the reaction?

asked Jan 22 in Physical Chemistry

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