Recent activity by LoreneQ88420

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How does the rate of a chemical reaction change due to the presence of various reaction products?

1 answer 27 views

What is the optimal doping concentration of boron in silicon for the fabrication of high-performance solar cells? How does the concentration of boron in silicon affect the electrical properties of the resulting semiconductor material?

answered Feb 21 in Materials Chemistry

1 answer 30 views

How do different simulation parameters (e.g. temperature, pressure, chain length) affect the behavior of polymer systems when using the Monte Carlo simulation method?

answered Feb 21 in Computational Chemistry

1 answer 31 views

How does the molecular structure of lipids affect the behavior of lipid bilayers in molecular dynamics simulations?

answered Feb 21 in Computational Chemistry

1 answer 40 views

What is the magnetic moment of the molecule NO (Nitric oxide) in its ground state, and how does it change upon excitation to its first excited state?

asked Feb 20 in Quantum Chemistry

1 answer 43 views

How do the photochemical properties of enantiomers differ and what are the potential applications of these differences in the field of photopharmacology?

asked Feb 13 in PhotoChemistry

1 answer 30 views

How can we design drugs that target specific genetic mutations responsible for genetic disorders?

answered Feb 12 in Medicinal Chemistry

1 answer 32 views

How can the properties of metal alloys be optimized for use in aerospace applications, taking into consideration factors such as strength, durability, and weight?

asked Feb 10 in Materials Chemistry

1 answer 35 views

How can the ionic conductivity of polymer electrolytes be improved for use in high-performance batteries?

answered Feb 7 in Polymer Chemistry

1 answer 36 views

How can limited access to laboratory equipment and chemicals be overcome to encourage more hands-on experimentation in chemistry education?

answered Feb 6 in Chemical education

1 answer 42 views

How can computational techniques be used to predict and optimize the creation of supramolecular complexes for drug delivery applications?

answered Feb 5 in Computational Chemistry

1 answer 83 views

Determine the enthalpy of adsorption for the reaction of hydrogen gas adsorbing onto a platinum surface, given that 2.00 g of hydrogen gas is adsorbed onto a 1.00 g platinum surface at 25°C and the pressure is 1 bar. The volume of the system is 1.00 L and the initial temperature of the platinum surface is also 25°C. Assume that the surface is in thermal equilibrium with the surroundings and that the gas behaves ideally.

answered Feb 4 in ThermoChemistry

1 answer 74 views

Design a heat exchanger for a process where hot air (80°C) needs to be cooled down to 30°C using water (10°C) as the cooling medium. The flow rate of hot air is 2 kg/s and the desired outlet temperature of the cooled air is 35°C. The maximum allowable pressure drop for air side is 50 kPa and for water side is 100 kPa. Design the heat exchanger using the LMTD (logarithmic mean temperature difference) method and calculate the required area of heat transfer.

asked Feb 4 in Chemical engineering

1 answer 115 views

Calculate the standard enthalpy change (ΔH°) for the combustion reaction of ethanol (C2H5OH) if the heat evolved is 1367.6 kJ and the molar mass of ethanol is 46.07 g/mol.

answered Feb 3 in Chemical thermodynamics

1 answer 82 views

What effect does changing the pH from 2 to 6 have on the equilibrium position of the redox reaction between Fe2+ and MnO4- in acidic solution?

answered Feb 3 in Chemical equilibrium

1 answer 88 views

How does the dipole moment of a water molecule change when it is replaced by a sulfur hexafluoride molecule, as determined by ab initio calculations?

asked Jan 31 in Computational Chemistry

1 answer 116 views

How does an increase in the concentration of reaction products affect the rate of the reaction between hydrogen peroxide and potassium iodide, and what is the underlying mechanism behind this effect?

asked Jan 31 in Chemical kinetics

1 answer 40 views

What are some major milestones in the evolution of chemistry, and how have they contributed to the development of modern chemistry? Provide specific examples of historical discoveries or advancements, and explain their significance in the context of chemistry's evolution as a science.

answered Jan 30 in Chemical education

1 answer 72 views

How can Raman spectroscopy be used to identify the presence of aspirin in a tablet and what are the specific Raman peaks that can be used to confirm its presence in the sample?

asked Jan 29 in Analytical Chemistry

1 answer 76 views

What did the study on the prevalence of eating disorders in Australia find?

answered Jan 20 in Psychology

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