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Rf values can be used to identify the type of drugs that had been taken by those who went through drug overdose.
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If two samples have identical Rf values does this mean that they are necessarily identical molecules Explain?
No. The molecules MAY (and probably are if you are presented with this situation in school/college lab courses) be identical but just the Rf values is not enough information to determine, you must conduct additional tests. Two different molecules can have the same Rf value.Compound A will always have an Rf of X in solvent M. Compound B will always have and Rf of Y in solvent M. But, Rf X can be equivalent to Rf Y without compounds A and B being identical.
What kind of coin is RF on front and 10F on back?
This is a 10 Franc ("10F") coin from France ("RF" stands for "Republique Francaise", which is French for the French Republic)
How do you calculate for bandwidth power saving in ssbsc?
SSBSC uses 1/2 of the bandwidth and 1/6 as much RF power as AM modulated 100% .
How is math used in MRI?
Inside the 'donut' of the MRI machine are a huge number of RF (radio frequency) sources and RF detectors. After the sources shoot a short, powerful pulse of RF into you, the sources shut off, and the tissues throughout your body "ring", in response to the RF they've absorbed, combined with the powerful field of the giant permanent magnet that's also all around you inside the donut. The detectors listen to the 'ringing' of your body's tissues from a huge number of different directions, all around the ring. Each detector hears a ring of a slightly different level, and hears it fade out after a slightly different time. The signals that are heard by all of the detectors are compared and combined to give a picture of what's inside you. The basic concept of forming the image is the same as in other forms of "tomography" ... the CT scan, using X-rays instead of RF, and the PET scan, using positron emission from a radioactive substance. The math is incredibly complex in each case. On a completely irrelevant note, but one which I can't bring my self to conclude without mentioning ... probably my only claim to fame is the fact that my brother-in-law is one of the names on the original patent granted to GE for the computed tomography process, and his sister was involved in some good-science early MRI research when we met in the late 70s. Those facts and several nickels have bought me many cups of coffee through the years ever since.
What is 13x 2y -10x-7y?
If you mean: 13x+2y-10x-7y then it is an algebraic expression that can be simplified to 3x-5y
Why are Rf values used?
Rf values are used mainly for simplicity. These values are generally easier to use to obtain percentages between a couple objects instead of using values that are already established.
How are Rf values used?
Rf value to compare the "unknown" components of colored candy dyes with the "known" components of food coloring dyes.
What are the Rf values of amino acids?
The Rf values are very important in the analysis of amino acids in this situation. This is because they provide the information and basic groundwork data that can be used in reviewing the results of any further experiments.
Why Ni positive 2 and iron positive 3 ions have different Rf values?
Rf values are determined by the polarity of the substance tested. Even though these atoms may have similar electron configuration, it is not identical, and neither are their Rf values.
Why test building materials at different RF values?
Different RF values are used in order to identify components of a mixture. Thin Layer & Column Chromotography is the procedure that is used to prepare and analyze materials, such as those that are used in the chemical manufacturing plants, forensics, and water purification, among other things.
How would you expect Rf values to change if you went from hexane-ethyl acetate solvent system to ethyl acetate only?
the rf values would increase
What is the significance of Rf value in chromatography?
See related link below for a better explanation than mine.. I am not to familiar with Rf values, but I have an idea. Rf values are the ratio between the distance traveled by the spot of the analyte to the distance traveled by the solvent used. This is used in paper chromatography and thin layer chromatography. Rf value will allow you to compare to your unknown substance that you are trying to analyze. I will put a link the both paper and TL chromatography.
What are the significance of values?
Rf Values determine the solubility of a substance with respect to a certain solvent.
What are the considerations in choosing a chromatographic solvent?
One of the considerations of a chromatographic solvent is whether it will bring out the different Rf values of the samples that are being used. If all of the compounds have the same Rf values then the separation of pigments would have failed due to the fact that all of them are in the same spot.
Arrange the following compounds in order of increasing Rf values in TLC Anthracene benzil tryphenylmethanol?
The order of increasing RF values in TLC is Benzil, methanol anthracene and tryphenyl.
How are values used?
Rf value to compare the "unknown" components of colored candy dyes with the "known" components of food coloring dyes.
What does an Rf value indicate?
Rf value indicates the relationship of the distance moved by a pigment to the distance moved by a solvent.The Rf can be calculated by the following equation. Rf=distance pigment migrated/distance solvent front migrated.
