Recent activity by BobBar745884

1 answer 25 views

How does the size and composition of microplastics affect their toxicity towards marine life?

1 answer 32 views

What is the effect of the intensity of light on the rate of the reaction between potassium iodide and hydrogen peroxide, and how does this compare with the effect of temperature on the reaction rate under the same conditions?

answered Feb 22 in Chemical kinetics

1 answer 30 views

How does the polarity of the solvent affect the rate of a photochemical reaction between a specific chromophore and the solvent?

answered Feb 22 in PhotoChemistry

1 answer 30 views

How does the polarity of the solvent affect the rate of photochemical reactions in different solvents? Provide experimental evidence to support your answer.

asked Feb 22 in PhotoChemistry

1 answer 26 views

How does pH affect the stability and size of silver nanoparticles in a colloidal solution?

answered Feb 22 in Physical Chemistry

1 answer 30 views

How does the liver metabolism affect the pharmacokinetics of a drug being administered for the treatment of a particular disease?

answered Feb 20 in Medicinal Chemistry

1 answer 30 views

How does the introduction of heavy lanthanide ions affect the quantum efficiency of photochemical processes in coordination compounds?

asked Feb 20 in PhotoChemistry

1 answer 28 views

What is the electronic ground state configuration of the molecule carbon monoxide (CO), and how does this configuration relate to the bonding and physical properties of the molecule? Use quantum chemical calculations to support your answer.

answered Feb 20 in Quantum Chemistry

1 answer 37 views

How can we use quantum chemistry to predict the catalytic activity and selectivity of a particular catalyst in a chemical reaction?

asked Feb 14 in Quantum Chemistry

1 answer 46 views

What is the role of molecular chaperones in protein folding? How do different classes of chaperones function to enable the proper folding of a protein? Please explain the processes involved in protein synthesis and folding with the help of examples.

answered Feb 13 in BioChemistry

1 answer 37 views

How does the density of a polymer chain dependence vary with temperature, molecular weight, and chain stiffness in Monte Carlo simulations of polymer systems?

answered Feb 13 in Computational Chemistry

1 answer 72 views

What is the electronic structure and bonding in Dy3N@C80 and Dy2ScN@C80 metallofullerenes? How does the number and location of metal atoms within the fullerene cage affect the electronic properties of the complex?

answered Feb 13 in Coordination Chemistry

1 answer 34 views

How can chemistry teachers provide better support and accommodations for students with learning disabilities to promote their success and engagement in the subject?

answered Feb 5 in Chemical education

1 answer 45 views

How can chemical educators simplify complex chemical concepts without losing their scientific accuracy?

asked Feb 4 in Chemical education

1 answer 68 views

Determine the acidity or basicity of the following molecules: ammonia (NH3), hydrogen chloride (HCl), water (H2O), and carbon dioxide (CO2). Rank them in order of increasing acidity or increasing basicity and explain your reasoning.

asked Feb 4 in Chemical bonding

1 answer 89 views

Calculate the standard enthalpy change (∆H°) for the reaction between 25.0 mL of 0.100 M HCl and 25.0 mL of 0.100 M NaOH at 25°C. The density of each solution is 1.00 g/mL and the heat capacity of the solution is 4.18 J/g·°C. The reaction takes place in a calorimeter, and the temperature increase is measured to be 8.47°C.

asked Feb 3 in Chemical thermodynamics

1 answer 98 views

What is the amount of copper ions present in a 1.0 mL sample of copper sulfate solution, when a current of 3.0 A for 10 seconds is used for coulometry analysis, assuming 100% efficiency in electrode reactions and a coulombic efficiency of 90%?

answered Jan 30 in Analytical Chemistry

1 answer 73 views

How can the concentration of lead in a given water sample be determined using atomic absorption spectroscopy?

asked Jan 29 in Analytical Chemistry

1 answer 69 views

Calculate the heat of hydration for magnesium ion when 0.5 moles of magnesium chloride is dissolved in 500 ml of water at 25°C. Given that the enthalpy change of solution for magnesium chloride is -641 kJ/mol and the specific heat capacity of water is 4.18 J/g°C.

asked Jan 23 in ThermoChemistry

1 answer 115 views

Identify the number of chiral centers in the molecule shown below and determine whether it is a meso compound or not. Also, draw the enantiomers of the given molecule. H H \ / C=C / \ H OH

answered Jan 21 in Organic Chemistry

Categories