a) Why is mercury a more suitable substance to use in a barometer than
water?
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Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure.This is because mercury is 13.6 times more dense than water
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Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure. A barometer using water, for instance, would need to be 13.6 times taller than a mercury barometer to obtain the same pressure difference. This is because mercury is 13.6 times more dense than water.
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