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A datum line mustn't be drawn in ink so that when you add the solvent while doing chromotography, the ink doesn't spread and it might even mix with the actual color that you are testing on and that could change the r f value whereas if you draw it with a pencil, the results would be more accurate.
Hope that helps :)!
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∙ 13y ago
Lxcky
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Cone shaped science item?
The tip of a sharpened pencil; the pencil-sharpener; some lamps.The tip of a sharpened pencil; the pencil-sharpener; some lamps.The tip of a sharpened pencil; the pencil-sharpener; some lamps.The tip of a sharpened pencil; the pencil-sharpener; some lamps.
Does pencil lead have coal in it?
Pencil lead does not have coal. Pencil lead contains graphite.
What is the area of a pencil case?
Depends on what pencil case
What is the lightest pencil to use?
The 4H is the lightest pencil.
How do you dissolve pencil lead from the skin?
To dissolve pencil lead from the skin, place the pencil in a container of H2O2 and it should dissolve in a day or 2.
Is Curious George drawn with a pencil?
Yes he is drawn with pencil
Will a line drawn by a pencil conduct electricity?
we know that graphite(pencil lead)conducts electricity.a line drawn by the pencil contains graphite particles.then why can't it conduct electricity?
How do you use the word drawn in a sentence?
How much have you drawn from the well? That was a well-drawn caricature of me. Was that drawn with pencil or pen?
What do you call the line drawn in baseball from 1st to 2nd to 3rd and home again?
Baseline
What is current drawn by pencil cell of 1.5 v?
nothing..............
Bangladesh is about the size of blank?
blank paper drawn by pencil
When setting up a chromatogram suggest why the base line where dyes are placed is not drawn with a pen?
The baseline where dyes are placed in a chromatogram is typically not drawn with a pen because the ink from the pen could potentially interfere with the separation of the dyes. Using a pen may introduce additional components into the chromatogram that can affect the accuracy and reliability of the analysis. Instead, a pencil or other non-reactive marking tool is typically used to mark the baseline.
Should a layout be drawn in pencil?
Yes, because if you make a mistake you can erase it.
Why should lines be drawn on the filter paper with a pencil not a pen?
the ink will run because ink is made up of diffrent colours and pencil does not
Does the laminating proccess ruin pencil drawn pictures?
no its just like drawing on them again
What is drawn by everyone without pen or pencil?
How about Breath, or you could draw Curtains as well.
Why do you need a pencil to draw?
You need a pencil to draw because you need to erase when your doing sketch.
