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Column chromatography does separate polar compounds. Use
EtOAc : MeCN : MeOH : water (relative volumes, not percentages)
60 : 20 : 20 : 20
60 : 15 : 15 : 15
60 : 10 : 10 : 10
70 : 10 : 5 : 5
70 : 5 : 2.5 : 2.5
70 : 2.5 : 1.25 : 1.25
If streaking occurs, or if you are trying to purify an acid with
limited solubility in these systems, it sometimes helps to add 0.5%
triethylamine. Reference: external link
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Why garlic cutting doesnt make us cry?
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In general organic contains carbon molecules and/or those related to life. It is the chemistry of carbon containing compounds.Inorganic is everything else and generally do not contain carbon (with some exceptions).
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for example phloem .... doesnt have a nucleus ... and it needs a nucleus to survive ... thats why they have a companion cell which have a nucleus for them ...if u try to separate the companion cell from the phloem the phloem will die after some time
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Two or more elements react now to improve the above answer when two or more elements (doesnt matter if they ere isotopes or not) come together that is when a compound is made . Compounds could be broken down but elemants can NOT,
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Totally different compounds. Glycerol doesnt have any nitrogen whereas glycine does for example. Glycine is 1 of the 20 amino acids that make up proteins. look at them in wikipedia. Glycerol (C3H8O3) , glycine (C2H5NO2)
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Oil contain non-polar compounds and water has a polar molecule.
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Oil and sand are two substances that will not dissolve in water.
Why garlic cutting doesnt make us cry?
The sulfur compounds in ordinary onions are more concentrated and more effective at stimulating our tear glands.
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A continuous break. This is particularly useful where you would like to go between 2 columns and 1 column of text.
