how can i separate liquid from liquid using  centerifugal termenology?(give me full explanation please0?
349110
You are asking a lot.\nHope you can understand the answer\n\nhttp://www.cheresources.com/centcontactor.shtml
198886
somethings wrong here dude. you cant get something more concentrated. like just think about it, the only way you could make it more concentrated is to take otu water from it, which isnt what youre supposed to do here.\ni think maybe you got the question backwards. from 100mL of 0.92M NaCl, make 0.39M solution. it doesnt matter, its same thing. which is \n0.92 x 0.1 = 0.39 x v2      \nv2 = 236mL. so basically you take your 100mL and add 136mL of water to it  so the new volume is 236mL. and the new concentration would be 0.39M
922390
Look up "hydrologic cycle":\n\n1. evaporation / sublimation / transpiration\n2. atmospheric storage \n3. condensation / precipitation\n4. runoff / infiltration
706477
An improved annular centrifugal contactor design is being commercially employed in numerous liquid-liquid extraction applications.  It is mechanically driven by a \ndirectly coupled motor at relatively low rotor speeds.  The combination of interchangeable heavy phase weirs and variable rotor drive makes this centrifuge applicable to a wide range of processes.  Single stage efficiencies of 90% or higher are typical for chemical systems with rapid kinetics.  Mixing and disengaging times range from 10 to 30 seconds each, dependent on the feed rate to the unit and the unit size.  Efficient two phase mixing is achieved in the annulus between the spinning rotor and fixed housing.  For versatility, a low mix sleeve can also be used to process shear sensitive liquids, often encountered in washing applications.\n\nAnnular centrifugal contactors with rotor diameters of 5 to 51 centimeters which range in throughput from 2 to 750 liters per minute are now readily available.  The criteria used to select the proper size and operating parameters needed will be discussed.  In addition, convenient methods of using this technology to convert batch to continuous processing will be given.   Advantages in yield improvement and waste minimization will be discussed, and process equipment footprint will be given.  Finally, some field examples which describe the versatility of this liquid-liquid centrifugal contactor will be presented. \n\nfor multistaging pl. click the link bellow:\nhttp://www.cheresources.com/centcontactor.shtml
471742
Ummm...You will have to figure out which is faster... but I can give an idea as to proceedure...First, try to answer this question: What are all the colored species in grape juice? You need to know that first. Hopefully there is only one. That would simplfy things. Then you need an extinction coefficient for that compound, if you can find one. Using that, you can take several absorbance measures and use Beer's law to establish the concentration of that species in your stock solution. Beer's law states that Absorbance = extinction coefficient x concentration x path length. Your path length is the width of your cuvette, which is usually 1 cm. Beer's Law will not be valid if you use a solution that is so concentrated that it gives you an absorbance value greater than 2. At Absorbance = 2, well over 99% of light is being absorbed. A reading over 2 is thus considered analytically unusable. Your juice can be diluted, if necessary, with DEIONIZED (aka distilled) water. Once you do that, I would roughly time each reaction by just looking at it with my eye, adding just a drop or so of bleach/peroxide initially, and increasing the amount only if necessary. Make sure to add exactly the same amount of bleach/peroxide to exactly the same volume of grape juice. Once you have the reaction basically set up to your satisfaction, then place your juice sample in the colorimeter and get ready to add your reagent. Remember to take a measurement before you add any bleach/peroxide for EACH of the two tests. And take your measurements on the same time frame (ex: every 30 sec.)Good Luck!!! :-)
941085
Pore some vegetable oil into a glass of water.  Shake it up then let it sit for a minute.  The oil will separate out of the water and you will see two layers.  The oil is a lipid because it isn't polar and can't dissolve in the water.
1134656
Liquid takes the shape of its own container.
366491
different ways to do it.  steam distillation, expression, solvent extraction and efleurage. the first is the easiest and what you want to know if you are looking for a how to. Use hot steam, like a steamer, you'll end up with the oil and water.  then separate the oil.  \n\nthe other methods are more complicated, but you do end up with more oil.  but at what price?  second method the is to use pressure or centrifugation. At home, not likely you have anything to make this work.   The third method you use a solvent, but then the oil and solvent are mixed.  You then evaporate the solvent (you can get at a whole foods store to do this) when the solvent is evaporated you are left with a heavy, waxy substance called concrete. Then you have to separate the liquid from the was.  it's great because it is most concentrated from of aroma, but very time consuming and complicated.  That last, efleurage is a really long process using animal fats and alcohol. Although essential oils main usage is in cosmetics and perfumery, many of them do have proved therapeutic properties.
127488
Their difference in polarity and density are probably the two most likely properties to affect the rate of separation. Molecular weight differences between the two liquids would probably have some impact, also temperature would effect the rate of separation.
595789
To separate caffeine, you could use HPLC, LC, GC, or TLC, which are all chromatography techniques. \n\nIf you do a physical separation, a polar organic solvent would do nicely.\n\nTo make sure that you are actually extracting the chloroform, suspend the separatory funnel on a ring off of a ring stand. Wait 10 mins. You'll see two layers, a top layer and bottom layer.\n\nChloroform has a density of 1.48 g/mL and water has a density of 1 g/mL, so the chloroform will be the bottom layer. Use the sep funnel to recover all the chloroform. At the end, I'd run saturated sodium chloride through the chloroform and separate that, to clear any nonorganics from the chloroform.\n\nAfter that, you can put the chloroform on a rotavap or do TLC to see if you have caffeine and caffeine only (doubtful)
387296
There are multiple ways to separate sand and water.  If you need the sand, you evaporate the water away.  If you need the water, you run it through a filter.  If you need them both, a centrifuge can fairly completely separate them by allowing the sand to be forced to the bottom.
1168602
Please, the question is not completed because if you are try to use separating techniques , you must have a mixture that you want to separate so toothpick is just a substance and not a mixture you can add any other substance before it become a mixture.\nthanks for my mark.
854162
I assume you mean how does that work.\n\nMost liquids expand when heated and contract when cooled. The alcohol in thermometer will expand (rise) when heated and contract (fall) when cooled.
298764
that can be done either just by the density diffrences (one will float on top of the other and can be skimmed off)\n\nOR\n\nyou can disolve one of them and make the liquid layers seperate that way. I think the benzophenone will disolve in an organic layer and the naphthol will disolve in water.
273947
Distillation is a method used to seperate substanced based on their boiling points.\n\nIf you have a mixture of say....water and sand, one way to seperate them would be to evaporate away the water, leaving the dry sand behind.  This also works for other things, like a solution of water and alcohol.  Since alcohol has a lower boiling point (meaning that it has a higher vapor pressure at a given temperature than water), it will evaporate quicker than water when you heat the solution.\n\nWhen you lower the pressure above a liquid, the liquid boils at a lower temperature.  A liquid will boil when its vapor pressure eqauls the pressure above the liquid, so if you lower pressure, you lower its boiling point.\nWhen you lower the pressure substancially (like with a vacuum) liquids will boil much easier (some even at room temperature), meaning that you do not have to heat them up quite as much in order to boil them.
181021
It is a method used to separate a solid organic substance from other solid impurities.\n-The impure solid is dissolved in a suitable hot solvent (to dissolve only the organic solid, not the impurites)\n-The impurities that did not dissolve in the solvent are removed by filtration.\n-The filtrate is left to cool, whereby any soluble impurities remain in the solution and the pure product crystallizes out.\n-The crystals formed are filtered using a vaccum filtration apparatus to help them to dry out quickly.\n-The crystals are washed with the cold solvent to remove impurities on the surface of the crystals.\n-Final drying of the crystals is carried out in a desicator at low pressure.
448305
That's where you scrape the TLC coating where your analyte of interest makes a spot.  Then you can dissolve the analyte using a suitable solvent and centrifuge to let the TLC solid stationary phase settle to the bottom.\n\nThis process allows you to separate an analyte of interest from other compounds it is mixed with.