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zhenek [66]
3 years ago
6

Would a pure substance ever settle out and form two distinct layers? Explain your reasoning.

Chemistry
1 answer:
garik1379 [7]3 years ago
6 0

Answer:

No, the only way they can be separated is through chemical methods. ... A compound is made up of two or more elements that are chemically combined and elements are combined to form a compound.

Explanation:

You might be interested in
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skelet666 [1.2K]

Answer:

(ii) 1 dye

(iii) Food coloring F is insoluble in the solvent

(iv) 'E' and 'H'

(b) Food colouring G

Explanation:

Paper chromatography principle is based on the rates of migration of chemicals across a sheet of paper which are different and it consists of a stationary phase such as the water in the paper and a mobile phase such as the solvent resulting in the partitioning of the components of the mixture across the paper

The solution components are positioned to start in one place from where they migrate and separate out on the chromatography paper

(ii) The number of components into which the food colouring 'H' separates into = 1

Therefore, the number of dyes in food colouring 'H' = 1 dye

(iii) Food coloring 'F' does not move because it is insoluble in the solvent, which is the mobile phase

(iv) The food colouring that contains the dye that is likely to be most soluble in the solvent are does for which the dyes travel furthest, which are;

Food coloring 'E' and 'H'

(b) Using a similar question solution found on 'tutor my self' website, we have;

The R_f values are given as follows;

R_f = \dfrac{Distance \ moved \ by \ dye}{Distance \ moved \ by \ solvent}

The distance moved by the solvent = 5 units

The distance moved by dyes in food colouring 'E' and 'H' = 4 units

The distance moved by dye in food colouring 'G' = 3.3 units

The distance moved by the second dye in food colouring 'E' = 2.7 units

By inspection, we get;

R_f dye in food colouring 'G' = 3.3/5 = 0.66,

Therefore, the dye with R_f value closest to 0.67 is the dye in food colouring 'G'.

5 0
3 years ago
Iron filings were mixed together with salt crystals. What unique property of iron would be BEST to separate the filings from the
Sedaia [141]
Iron has magnetic properties, so you would just need to hold a magnet over the mixture and the filings will come right out.
4 0
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If you combine neon argon and helium what would happen
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All are gases so no visible reaction persay, unless in closed quarters and then massive pressure.
5 0
2 years ago
Can someone help me i will give 100 points
cestrela7 [59]

Answer:

california

Explanation:

5 0
10 months ago
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True or False. Star gazing is a pretty popular hobby in today's world.
ValentinkaMS [17]

Answer:

yes (true)

Explanation:

Star gazing has started to become a more popular hobby in todays world due to the pandemic

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