Question

how to add color in mercury witch chemical used​

Answer 1

Answer:

If you are talking about the color of mercury, this is it. When the Mercury mix with Sulphur, it produce reddish color. They always used in thermometer in old days. But because it is toxic, people change to use alcohol in glass type thermometer which offer the same performance as mercury one.

Answer 2

Answer:

Red mercury is a term used for a number of substances that are supposed to exist (or that could possibly exist). So far, no such substance has been found. The chemical element mercury most often occurs in a mixture with Sulphur, as HgS. That mixture is known as Cinnabar, and reddish in color.

Explanation:

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