Recent activity by AWSReginald

1 answer 19 views

How does the intensity of light affect the rate of the reaction between sodium thiosulphate and hydrochloric acid?

asked 3 days ago in Chemical kinetics

1 answer 6 views

How does the presence of heteroatoms such as nitrogen or oxygen in the ring structure of heterocyclic compounds affect their reactivity in organic reactions? Provide a specific example of a heterocyclic compound and explain its reaction mechanism.

answered 3 days ago in Organic Chemistry

1 answer 27 views

How does the presence of a catalyst affect the activation energy and rate of a chemical reaction?

answered 3 days ago in Physical Chemistry

1 answer 21 views

What is the optimum reaction temperature and pressure for the synthesis of polypropylene from propylene monomer using Ziegler-Natta catalyst?

asked 3 days ago in Chemical synthesis

1 answer 12 views

What is the most efficient process for the production of 1,3-propanediol using renewable resources such as plant-based feedstocks? How does the choice of catalyst affect the yield and selectivity of the reaction?

answered 3 days ago in Chemical engineering

1 answer 31 views

What is the chemical reaction responsible for the formation of acid rain and how does it affect soil pH and plant growth in affected areas?

answered Feb 18 in Environmental Chemistry

1 answer 32 views

How does plasma treatment modify the surface properties of polymeric biomaterials and affect their biocompatibility?

asked Feb 14 in Surface Chemistry

1 answer 34 views

How does pH affect the electrokinetic phenomena in colloidal systems? Specifically, what is the effect of varying pH on zeta potential and electrophoretic mobility?

answered Feb 14 in Surface Chemistry

1 answer 9 views

How do the properties of nanoparticles differ from those of bulk materials, and what factors contribute to these differences?

asked Feb 13 in Physical Chemistry

1 answer 33 views

What is the impact of heavy metal contamination on the growth and yield of wheat crops in agricultural soil?

asked Feb 13 in Environmental Chemistry

1 answer 37 views

What is the effect of doping metal oxides with transition metals on the electronic properties of the material using density functional theory calculations?

answered Feb 12 in Computational Chemistry

1 answer 3 views

How can we design a medication to treat Alzheimer's disease by targeting the enzyme acetylcholinesterase?

answered Feb 12 in Medicinal Chemistry

1 answer 39 views

How can the optimization of the pharmacokinetic properties of novel compounds be used to develop more effective treatments for cardiovascular diseases?

asked Feb 10 in Medicinal Chemistry

1 answer 36 views

How can molecular docking studies help in understanding the mechanisms of protein-protein interactions and in identifying potential inhibitors for these interactions?

asked Feb 5 in Computational Chemistry

1 answer 49 views

Consider a container separated into two compartments by a barrier. One compartment has a gas at a pressure of 1 atm and the other compartment is empty. The barrier has a small hole in it, which allows the gas to diffuse from one compartment to another. If the rate of diffusion of the gas is 0.2 mL/min and the molar mass of the gas is 28g/mol, what is the mass of gas transferred through the hole in 5 hours?

asked Feb 3 in Physical Chemistry

1 answer 42 views

Calculate the standard enthalpy change for the reaction: CH3OH (l) + 3/2 O2 (g) -> CO2 (g) + 2H2O (l) given the standard enthalpies of formation for CH3OH (l), CO2 (g) and H2O (l) as -238.6 kJ/mol, -393.5 kJ/mol and -285.8 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 61 views

How do changes in temperature affect the structure and dynamics of a lipid bilayer membrane? Use molecular dynamics simulations to investigate the changes in lipid bilayer properties as temperature increases or decreases.

asked Jan 31 in Computational Chemistry

1 answer 96 views

What strategies can a chemistry student use to adequately prepare for chemistry-related careers, and how can they ensure they are gaining the necessary skills and knowledge to be successful in their chosen profession?

asked Jan 30 in Chemical education

1 answer 60 views

Calculate the heat of hydration of magnesium sulfate. When 5.00 g of MgSO₄ is mixed with 25.0 mL of water at 25°C, the temperature of the resulting solution rises to 36.5°C. The specific heat of water is 4.18 J/(g•°C), and the density of the resulting solution is 1.03 g/mL.

answered Jan 23 in ThermoChemistry

1 answer 44 views

Calculate the enthalpy change for the combustion of 1 mole of methane gas (CH4) at standard conditions (25°C and 1 atm), given that the standard enthalpy of formation of methane is -74.87 kJ/mol and the standard enthalpy of formation of carbon dioxide (CO2) and water (H2O) are -393.51 kJ/mol and -285.83 kJ/mol, respectively.

asked Jan 23 in ThermoChemistry

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