Question

why is mercury perfered in
barometer​

Answer 1

Answer:

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.

Answer 2

Mercury is commonly used inbarometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure. Abarometer using water, for instance, would need to be 13.6 times taller than amercury barometer to obtain the same pressure difference.