Recent activity by VickeyBatema

1 answer 23 views

How does the size and shape of metal nanoparticles affect their electronic and optical properties? Can we predict and control these properties using quantum chemistry calculations?

asked Feb 24 in Quantum Chemistry

1 answer 33 views

How do properties such as size, charge, and morphology of colloidal particles affect their interaction with other particles and the stabilization of colloidal dispersions?

asked Feb 22 in Physical Chemistry

1 answer 27 views

What is the predicted molecular geometry and polarity of a water molecule?

answered Feb 22 in Inorganic Chemistry

1 answer 30 views

How does the metabolic breakdown of a specific medication affect its effectiveness and potential side effects in the body?

asked Feb 20 in Medicinal Chemistry

1 answer 27 views

What is the Lewis structure of the molecule CHCl3, and what is the total number of valence electrons in it?

answered Feb 20 in Chemical bonding

1 answer 21 views

What is the effect of solvent polarity on the photochemical properties of fluorescent dyes?

answered Feb 19 in PhotoChemistry

1 answer 37 views

What are the possible resonance structures for the carbonate ion (CO3^2-)? Draw all the structures and explain why resonance occurs in this molecule.

answered Feb 18 in Chemical bonding

1 answer 51 views

What is the bond length of a nitrogen molecule (N2) with a bond order of 3?

answered Feb 18 in Chemical bonding

1 answer 34 views

What is the mechanism behind the enhancement of Raman signals observed in SERS, and how can it be optimized for detection of trace amounts of analytes in a sample?

asked Feb 17 in Surface Chemistry

1 answer 41 views

What is the crystal structure of sodium chloride (NaCl) and how does it relate to its physical properties such as melting and boiling point, conductivity, and solubility in water?

answered Feb 14 in Physical Chemistry

1 answer 33 views

How do proteases, a type of enzyme responsible for protein degradation, differ in their specificities for different types of proteins, and how do these differences impact protein turnover rates in the body?

asked Feb 14 in BioChemistry

1 answer 51 views

Which metal will displace copper from copper sulfate solution - zinc or iron? Provide the balanced chemical equation for this single replacement reaction.

asked Feb 13 in Chemical reactions

1 answer 68 views

How does the change in concentration of reactants affect the reaction rate in a first-order reaction? Provide experimental evidence to support your answer.

answered Feb 13 in Chemical kinetics

1 answer 36 views

How can the structure and properties of a drug be designed to selectively target and modulate specific metabolic pathways in order to effectively treat metabolic disorders?

answered Feb 11 in Medicinal Chemistry

1 answer 37 views

How can natural compounds extracted from plants be modified to develop effective treatments for gastrointestinal diseases such as Crohn's and ulcerative colitis? What specific chemical modifications need to be made to enhance bioavailability and efficacy of these compounds as potential medications for digestive disorders?

answered Feb 5 in Medicinal Chemistry

1 answer 77 views

Calculate the power output of a Galvanic cell consisting of a standard hydrogen electrode and a standard copper electrode at 298 K when the concentration of copper ions in the cathode half-cell is 0.1 M and hydrogen gas pressure in the anode half-cell is at 1 bar. The standard reduction potentials for the hydrogen and copper half-reactions are +0.0 V and +0.34 V, respectively.

answered Feb 3 in ElectroChemistry

1 answer 95 views

What is the concentration of caffeine in a sample of coffee using liquid chromatography?

asked Jan 30 in Analytical Chemistry

1 answer 20 views

An unknown compound was discovered in a crime investigation. Use mass spectrometry to identify the molecular formula and possible functional groups present in the compound.

asked Jan 22 in Analytical Chemistry

1 answer 144 views

A student prepares a solution of 0.1 M acetic acid and 0.1 M sodium acetate in a 500 mL volumetric flask. If the pH of the solution is initially 4.7, what will be the new pH of the solution after adding 0.01 mol of hydrochloric acid?

answered Jan 22 in Chemical equilibrium

1 answer 84 views

A solution contains 0.1 M of an unknown ion X. The electrode potential of this ion X is measured to be +0.60 V versus the standard hydrogen electrode (SHE). Calculate the concentration of ion X in the solution using electrochemical methods.

asked Jan 22 in ElectroChemistry

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