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anonymous
 one year ago
has some one done the chromatography : separating mixtures lab i need help in it
anonymous
 one year ago
has some one done the chromatography : separating mixtures lab i need help in it

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Photon336
 one year ago
Best ResponseYou've already chosen the best response.1well there is TLC thin layer chromatography. let me explain this.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1dw:1442630427110:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know that but all i need is the table

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1Well you sometimes use this to see if your compounds reacted, or whether there are certain compounds left in solution. you create a solvent system; usually it's like ethyl acetate and hexanes in a certain ratio; and then based off of your solvent system You asked for a table, what table are you talking about? for TLC you need to calculate Rf values which is basically how much the compound moved on the paper, and there is no chart for those you need to determine those experimentally. dw:1442630592412:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it for a lab project

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1Your lab instructor will give you a solvent system to use or you'll be asked to find out/ prepare one yourself. in my lab course, we had to find out the solvent system that was necessary to separate our compounds. like I said the solvent system is usually Hexanes and Ethyl acetate. like there is no general chart for TLC if that's what you're saying.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im home school so i dont get help

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1hey do you have a screenshot of this or something @sof12345678910 ?

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1try posting it as an attachment

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i will in a sec if it works

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1"1. List one extensive and one intensive property of marker ink. 2. Define mixture. 3. Is tap water a heterogeneous or homogenous mixture? Explain your answer. 4. Is isopropyl alcohol (rubbing alcohol) a heterogeneous or homogenous mixture? "

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i all ready did that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i just need the table

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1You actually have to do the experiment

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know but it did not work

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1why would they give something like this lol if you're a virtual student without being in a real lab?,, makes no sense. to me

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1let me read this again

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i may just turn it with out the table

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1@sof12345678910 let me draw you another diagram

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1Take your coffee filter and cut it into a piece like the one below. Take a pencil and trace lightly two lines, one about a 1/2 inch from the top, the other a 1/2 inch from the bottom dw:1442632373919:dw

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1Then take your marker that you want to test

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1say you have 3 different colors

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1let's say Red, Blue, and green

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1dw:1442632607470:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok let me get the marker

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1I think you'll have to use different colors

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1dw:1442632767482:dw

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1@sof12345678910 make sure that when you spot with each color you put a small dot where the first line is where, you leave some space , then put the second color, space, third color. you have to leave space between.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1Now the most important step

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1dw:1442633042728:dw

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1@sof12345678910 when you put the solvent in, it must be below that first line in the strip then you let it stand.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1You need to do this twice once for water, and once for alcohol

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1Last thing: dw:1442633223525:dw

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1hopefully this is more clear
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