"Bar" is approximately the pressure of earth's atmosphere at sea level. Multiple bars are multiple normal air pressures. Three bar is three times the air pressure at sea level, etc.
Technically a bar is defined as 100 kPa, which is very slightly less than standard atmospheric pressure (1 atmosphere = 1.01325 bar).
The magnet bar is used for stirring solutions.
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Chemistry.
They are used to fix an object to a bar from a stand.
In chemistry it means precipitate.
What do you mean by anything about chemistry? What do you want to learn? Chemistry is about the study of elements.
The "I" in chemistry probably refers to the element iodine.
ATM in chemistry usually means atmosphere.
Do you mean chemistry
chemistry
it is combination ideas in chemistry,
You think probable to the chemistry involved in biological cells.