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The more soluble a molecule is, the higher it will migrate up the paper. If a chemical is very non-polar it will not dissolve at all in a very polar solvent. This is the same for a very polar chemical and a very non-polar solvent. When using water (a very polar substance) as a solvent, the more polar the color, the higher it will rise on the ...
Similarly, the choice of pH affects the polarity of the solutes. However, for column surface chemistries that are strongly ionic, and thus resistant to pH values in the mid-range of the pH scale (pH 3.5–8.5), these separations will be reflective of the polarity of the analytes alone, and thus might be easier to understand when doing methods ...
In normal-phase TLC, the stationary phase is polar. Silica gel is very common in normal-phase TLC. More polar compounds in a sample mixture interact more strongly with the polar stationary phase. [citation needed] As a result, more-polar compounds move less (resulting in smaller R f) while less-polar compounds move higher up the plate (higher R ...
TLC is an American multinational cable and satellite television network owned by the Networks division of Warner Bros. Discovery.First established in 1980 as The Learning Channel, it initially focused on educational and instructional programming.
The organic solvent is called also a modifier, since it is added to the aqueous solution in the mobile phase in order to modify the polarity of the mobile phase. Water is the most polar solvent in the reversed phase mobile phase; therefore, lowering the polarity of the mobile phase by adding modifiers enhances its elution strength.
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The library of Discovery+ is drawn primarily from the original programming of Warner Bros. Discovery's channel brands, including but not limited to Discovery Channel, Animal Planet, TLC, Travel Channel, Magnolia Network, HGTV, Food Network, Investigation Discovery, CNN, and other international brands where applicable such as Asian Food Network.
Ready Set Learn! was an American television block broadcast from late 1992 until 2010 across the Discovery Communications-owned TLC and Discovery Kids networks. A cable competitor to PBS's children's offerings, it broadcast twice on weekday mornings and comprised three hours of original, imported, and rerun programming plus music videos geared towards preschoolers.