Recent activity by DanialCheste

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How does the rate of reaction between sodium thiosulfate and hydrochloric acid change when the solvent is changed from water to an acetone-water mixture?

asked Feb 22 in Chemical kinetics

1 answer 80 views

How do the physical properties (e.g. density, viscosity, conductivity) of ionic liquids change with variations in the structure and composition of the cations and anions that make up the liquid?

answered Feb 22 in Physical Chemistry

1 answer 77 views

What is the Lewis structure of the molecule C2H6?

answered Feb 20 in Chemical bonding

1 answer 72 views

What is the effect of surface charge on the electrophoretic mobility of colloidal particles in an aqueous medium?

answered Feb 20 in Surface Chemistry

1 answer 86 views

What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) in water at different temperatures, and how does it vary with the change in pH of the solution?

asked Feb 19 in Surface Chemistry

1 answer 84 views

How can the synthesis and characterization of novel materials contribute to improving the energy storage capacities of batteries and supercapacitors?

answered Feb 11 in Materials Chemistry

1 answer 98 views

How can the knowledge of the molecular structure of a specific target virus be used to design drugs that selectively and effectively target the virus, while minimizing side effects on human cells?

answered Feb 7 in Medicinal Chemistry

1 answer 90 views

How can industries dispose of their waste products in an environmentally friendly manner, while still ensuring that these products are not harmful to the environment?

asked Feb 6 in Environmental Chemistry

1 answer 93 views

How can industrial waste disposal practices be modified to minimize their negative impact on the environment? Provide recommendations based on chemical properties and reactions of the waste, as well as best practices for disposal methods.

asked Feb 6 in Environmental Chemistry

1 answer 93 views

How can chemistry teachers provide better support to students with learning disabilities in the classroom, in terms of instructional strategies and accommodations, to facilitate and enhance their learning and success in chemistry?

answered Feb 5 in Chemical education

1 answer 77 views

How can chemistry students in areas with limited availability of chemistry-related internships and job opportunities gain practical experience and develop their skills to become competitive candidates for future employment in the field?

answered Feb 5 in Chemical education

1 answer 135 views

Identify the structure of the unknown organic compound using IR and NMR spectroscopy. The IR spectrum shows a peak at 1720 cm⁻¹ and the NMR spectrum shows a singlet at δ 1.0 ppm, a quartet at δ 2.5 ppm, and a doublet at δ 7.2 ppm. Provide the molecular formula and propose a possible structure for the compound.

answered Jan 31 in Organic Chemistry

1 answer 138 views

What are the possible alternatives to hands-on experimentation in chemistry for students who have limited opportunities for performing experiments in traditional laboratory settings?

answered Jan 30 in Chemical education

1 answer 151 views

What is the concentration of chloride ion in a 0.1 M hydrochloric acid solution using a chloride selective electrode?

answered Jan 30 in Analytical Chemistry

1 answer 64 views

How can liquid chromatography be used to determine the concentration of a specific compound in a sample? Construct a step-by-step experimental procedure that outlines the necessary equipment, reagents, and techniques to perform this analysis accurately. Additionally, include methods to determine research questions such as: how to interpret peak height, peak tailing, and resolution when analyzing the results of the chromatogram.

asked Jan 29 in Analytical Chemistry

1 answer 79 views

Calculate the enthalpy change for the following reaction using Hess's Law calculations:2H2S(g) + 3O2(g) → 2H2O(l) + 2SO2(g)Given the following information:2H2(g) + O2(g) → 2H2O(l) ΔH1 = -484 kJ/mol2S(s) + 3O2(g) → 2SO3(g) ΔH2 = -791 kJ/mol2H2(g) + S(s) → 2H2S(g) ΔH3 = -36 kJ/mol

asked Jan 23 in ThermoChemistry

1 answer 81 views

A student wanted to determine the Faraday constant using the electrolysis of silver nitrate solution. If a current of 2.5 amperes flowed through the solution for 2 hours and 30 minutes, and 0.508 grams of silver were deposited on the cathode, what is the value of the Faraday constant?

answered Jan 22 in ElectroChemistry

1 answer 80 views

A chemistry student needs to balance the chemical equation for the reaction between iron(III) oxide and carbon monoxide, which produces iron and carbon dioxide. Write and balance the equation using the smallest possible whole numbers.

answered Jan 21 in Inorganic Chemistry

1 answer 142 views

Identify the functional group present in the compound C6H5CHO and name the reaction(s) it undergoes when treated with HCN.

answered Jan 21 in Organic Chemistry

1 answer 98 views

How do sociocultural psychologists view the influence of culture on behaviour?

asked Jan 20 in Psychology

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