Recent activity by MOIRoderick9

1 answer 34 views

How does the properties of solid surfaces affect the adsorption of protein molecules and what are the mechanisms involved in the process?

answered Feb 22 in Surface Chemistry

1 answer 37 views

What is the polarity of a bond between carbon and oxygen in carbon dioxide? Please explain your reasoning.

answered Feb 22 in Chemical bonding

1 answer 24 views

What is the effect of molecular weight on the rheological properties of polymer melts?

asked Feb 21 in Polymer Chemistry

1 answer 29 views

How does the presence of metal nanoparticles affect the signal enhancement in Surface-enhanced Raman spectroscopy (SERS)?

asked Feb 17 in Surface Chemistry

1 answer 43 views

How can we predict the vibrational frequencies and infrared spectra of a molecule using quantum chemistry calculations, and what variables contribute to the accuracy of these predictions?

answered Feb 14 in Quantum Chemistry

1 answer 36 views

What strategies can be used to overcome inadequate preparation for a chemistry exam, and how can a student develop a study plan that ensures complete understanding of the material as well as confidence in their ability to succeed on the exam?

asked Feb 14 in Chemical education

1 answer 45 views

How does cholesterol impact the fluidity and permeability of a cell membrane?

asked Feb 12 in BioChemistry

1 answer 47 views

How can the adsorption of proteins on solid surfaces be effectively controlled and manipulated to enhance the performance and effectiveness of protein-based technologies, such as biosensors and drug delivery systems?

answered Feb 6 in Surface Chemistry

1 answer 42 views

How can limited exposure to current research in chemistry impact a student's understanding of the subject and hinder their ability to apply it in practical settings?

asked Feb 6 in Chemical education

1 answer 35 views

How can chemistry departments in schools and universities improve the availability of textbooks and resources for students who are limited in their access to these materials?

answered Feb 4 in Chemical education

1 answer 56 views

Calculate the standard free energy change (∆G°) for the following redox reaction at 25°C:2 Fe³⁺(aq) + 3 H₂(g) → 2 Fe(s) + 6 H⁺(aq)

answered Feb 3 in Chemical thermodynamics

1 answer 59 views

Calculate the standard electrode potential for the following redox reaction under standard conditions: Fe3+ + 3e- → Fe(s)

asked Feb 3 in Chemical thermodynamics

1 answer 98 views

What is the concentration of iron(II) ions in a sample of water collected from a local pond using colorimetry, if the measured absorbance of the sample at 565 nm is 0.673 and the molar absorptivity of the iron(II) complex at this wavelength is 20,500 M⁻¹·cm⁻¹?

asked Jan 30 in Analytical Chemistry

1 answer 123 views

How can we use Raman spectroscopy to identify the specific compound and its concentration in a given unknown sample? What are the advantages and limitations of using Raman spectroscopy over other analytical techniques for identifying specific compounds in a sample?

asked Jan 30 in Analytical Chemistry

1 answer 57 views

How can the presence of fluoride ions in drinking water be detected using an ion-selective electrode and what is the minimum detectable concentration of fluoride ions using this method?

answered Jan 29 in Analytical Chemistry

1 answer 71 views

How can the concentration of copper in a given water sample be determined using the technique of voltammetry?

asked Jan 29 in Analytical Chemistry

1 answer 78 views

Calculate the lattice energy of magnesium oxide (MgO) given that the ionic radii for Mg2+ and O2- are 0.72 Å and 1.40 Å respectively, and the lattice energy of MgO is -3795 kJ/mol.

asked Jan 23 in Inorganic Chemistry

1 answer 58 views

Calculate the heat of hydration for the dissolution of 5.00 grams of magnesium sulfate heptahydrate in 100.0 grams of water, given that the temperature rises from 25.0°C to 30.0°C. The molar mass of magnesium sulfate heptahydrate is 246.48 g/mol and the specific heat capacity of water is 4.18 J/g°C.

asked Jan 23 in ThermoChemistry

1 answer 82 views

Calculate the change in entropy when 1 mole of an ideal gas is compressed from 4 L to 1 L irreversibly at a temperature of 298 K.

asked Jan 23 in Physical Chemistry

1 answer 35 views

Please evaluate the social identity model of deindividuation effects SIDE .

asked Jan 20 in Psychology

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