Relative to front (Rf) is a measure of how far the mobile phase in a thin-layer chromatograph will move up the stationary phase. Generally, in TLC, the less polar molecule will move further on the plate as usually plates with a polar coating are used....
but even after my best attempt to get rid of the DMF, I'm still getting stationary spots. Also, I've only seen it smear once or twice, most of the time I end up with a blotch that didn't move at all. My friend whos working the same kinda reaction (in DMF) has the...
Colloidal solutions contain a mixture of substances in different phases where particles of one kind are dispersed in another medium. There are different kinds of colloidal solutions. The particles have size in nanometer range and due to very smalls size and weight, they keep on floating in the...
Significant foreground obstructions mean limited openings for shooting in this location, and I couldn't move any further away from this great blue heron. The Canon RF 600mm F4 L IS USM Lens is my usual choice for the selected location. While that lens has a 1-stop aperture advantage, it...
Transfect with the best of what's NxT thermofisher.com/neonnxt 13 Frequently asked questions Q: How does the Neon NxT Electroporation System differ from the Invitrogen™ Neon™ Transfection System? A: The Neon NxT Electroporation System relies on the same unique and trusted electroporation ...
1Vol. 22: 83-100, 1995 DISEASES OF AQUATIC ORGANISMS Dis aquat O r g Published June 15 Tropical reef-fish disease outbreaks and mass mortalities in Florida, USA: what is the role of dietary biological toxins? Jan H. Landsberg Florida Marine Research Institute, Florida Department of ...
What would happen if you carried out a TLC separation of acetaminophen and phenacetin in a normal phase and reverse phase TLC system? Explain which should have a higher Rf value for each type of ... Write out the most important difference ...
Why does sugar dissolve but not dissociate in water even though it is a polar molecule? Explain very briefly why the boiling point of H2O is higher than that of H2. What is the definition of chirality? What are coordination complexes and how do they form?
What does “extinct” mean? Learn the mass extinction definition and about other types of extinction. Explore how human activity impacts extinctions over time. Related to this Question Why should the extinction coefficient equal the slope on a standard curve?
Why does higher temperature weaken bonds? What is the definition of surface tension? What causes it? Why does a solute dissolve only to a particular extent in water? Explain in terms of intermolecular attractions why soaps and detergents dissolve in water. Why...