Explain how paper chromatography separates coloured substances in ink.

It works because some of the coloured substances dissolve in the solvent used better than others, so they travel further up the paper. A pencil line is drawn, and spots of ink or plant dye are placed on it.

Explanation:

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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