why do we choose mercury in the barometet
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because. it because its high density and the height of the column can be reasonable to measure atmospheric pressure
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# mercury is a liquid which can flow but doesn't stick to glass
#it has high coefficient of expansion so that even a small size raise in temp brings about sufficient expansion which can be detected in the capillary of the calibrated part of barometer
#it has high coefficient of expansion so that even a small size raise in temp brings about sufficient expansion which can be detected in the capillary of the calibrated part of barometer
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