Questions from General Chemistry

Q: What determines the elution order in sedimentation FFF?

What determines the elution order in sedimentation FFF?

Q: Three large proteins are ionized at the pH at which an electrical

Three large proteins are ionized at the pH at which an electrical FFF separation is carried out. If the ions are designated A2+, B+, and C3+, predict the order of elution.

Q: List the major advantages and limitations of FFF compared to chromatographic methods

List the major advantages and limitations of FFF compared to chromatographic methods.

Q: List the types of substances to which each of the following separation

List the types of substances to which each of the following separation methods is most applicable: a) Supercritical fluid chromatography. b) Thin-layer chromatography. c) Capillary zone electrophor...

Q: Define: a) Supercritical fluid. b) Critical

Define: a) Supercritical fluid. b) Critical point. c) Two-dimensional thin-layer chromatography. d) Electrophoretic mobility. e) Critical micelle concentration. f) Electrical fff

Q: Some ionization sources, known as soft ionization sources, do not

Some ionization sources, known as soft ionization sources, do not produce as many fragments as an electron ionization source, which is a hard ionization source. Which type of ionization source (hard o...

Q: What properties of a supercritical fluid are important in chromatography?

What properties of a supercritical fluid are important in chromatography?

Q: Copper(II) forms a 1:1 complex with the

Copper(II) forms a 1:1 complex with the organic complexing agent R in acidic medium. The formation of the complex can be monitored by spectrophotome try at 480 nm. Use the following data collected und...

Q: Aluminum forms a 1:1 complex with 2-hydroxy-

Aluminum forms a 1:1 complex with 2-hydroxy-1-naphthaldehyde p-methoxybenzoylhydraxonal that exhibits fluorescence emission at 475 nm. Under pseudo-first-order conditions, a plot of the initial rate o...

Q: The enzyme monoamine oxidase catalyzes the oxidation of amines to aldehydes.

The enzyme monoamine oxidase catalyzes the oxidation of amines to aldehydes. For tryptamine, Km for the enzyme is 4.0 × 10-4 M, and vmax = k2[E]0 = 1.6 × 10-3 μM/min at pH 8. Find the concentration of...