Recent activity by CalvinHornin

1 answer 35 views

How does the size and orientation of the organic cation affect the electronic and optical properties of perovskite materials?

asked Feb 24 in Quantum Chemistry

1 answer 30 views

What is the step-by-step procedure for the preparation of 2,4-dichlorobenzoic acid from benzoic acid and chlorine gas using a suitable solvent and catalyst, and what is the yield obtained?

asked Feb 22 in Chemical synthesis

1 answer 33 views

What is the effect of pH on the adsorption efficiency of activated carbon for pollutants such as methylene blue?

answered Feb 22 in Surface Chemistry

1 answer 27 views

What is the effect of solvent polarity on the intermolecular interactions between two molecules of different polarities?

answered Feb 19 in Quantum Chemistry

1 answer 32 views

What is the effect of different light sources (UV, visible, and dark) on the reaction rate of the decomposition of hydrogen peroxide catalyzed by potassium iodide?

asked Feb 19 in Chemical kinetics

1 answer 37 views

What is the mechanism behind the destructive impact of chlorofluorocarbons (CFCs) on the ozone layer, and how can this mechanism be leveraged to develop alternative compounds that do not harm the ozone layer?

asked Feb 19 in Environmental Chemistry

1 answer 42 views

How does the binding affinity between two proteins affect the success rate of protein-protein interaction inhibitors designed using molecular docking studies?

asked Feb 17 in Computational Chemistry

1 answer 40 views

How can the use of nanotechnology be optimized to enhance the delivery of drugs for improved efficacy in medicinal chemistry?

answered Feb 13 in Medicinal Chemistry

1 answer 68 views

What methods and equipment can be used for the extrusion of a specific polymer, and how can the extrusion conditions be optimized to achieve the desired properties of the final product?

asked Feb 13 in Polymer Chemistry

1 answer 39 views

How can technology be effectively integrated into the teaching of complex chemical concepts, such as organic chemistry, while still ensuring that students gain a deep understanding of the material?

answered Feb 6 in Chemical education

1 answer 34 views

How can computational studies be used to predict the effects of mutations in active site residues on enzyme catalysis?

answered Feb 5 in Computational Chemistry

1 answer 41 views

How can chemistry students effectively learn laboratory techniques and concepts when limited to virtual or theoretical experimentation due to a lack of access to physical laboratory equipment?

asked Feb 4 in Chemical education

1 answer 45 views

Here's a question for the chemistry student to solve based on the subtopic of predicting the direction of a reaction at equilibrium:If the concentration of nitrogen dioxide (NO2) gas in a sealed container at equilibrium at a temperature of 450 K is increased, what will be the effect on the concentration of nitrogen monoxide (NO) in the container?

answered Feb 4 in Chemical equilibrium

1 answer 62 views

Calculate the standard entropy change for the reaction: 2H2 (g) + O2 (g) -> 2H2O (g) given the standard enthalpy of formation of H2O (g) is -241.8 kJ/mol at 298 K.

asked Feb 3 in Inorganic Chemistry

1 answer 73 views

Calculate the enthalpy of oxidation for the reaction of 2 moles of magnesium (Mg) with 1 mole of oxygen gas (O2) under standard conditions. Given the standard enthalpy of formation (ΔH°f) of MgO is -601.8 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 141 views

A chemistry student wants to determine the concentration of a solution containing iron (III) ions. Using colorimetry, they measure the absorbance of the solution at a specific wavelength and plot a calibration curve with solutions of known iron (III) ion concentration. The student then measures the absorbance of their unknown solution at the same wavelength and uses the calibration curve to determine the concentration of iron (III) ions in the sample. What is the concentration of iron (III) ions in the unknown solution, in units of moles per liter?

answered Jan 22 in Analytical Chemistry

1 answer 109 views

A chemistry experiment involves burning a sample of propane gas, C3H8, and measuring the heat released. If 2.00 grams of propane is burned completely to produce CO2(g) and H2O(l), and the heat of combustion is found to be -2044 kJ/mol, what is the heat released in kJ when 2.00 grams of propane is burned?

answered Jan 22 in ThermoChemistry

1 answer 108 views

In organic chemistry, what is the proper name for the compound CH3CH2OH?

answered Jan 21 in Organic Chemistry

1 answer 155 views

According to Piaget's theory, how do children learn?

asked Jan 20 in Psychology

1 answer 136 views

According to the hierarchy of needs theory, what is the highest level of need?

asked Jan 20 in Psychology

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