Why Is Mercury Used in a Liquid Barometer instead of Water?

Answer

The reason why Mercury is used in a liquid barometer instead of water is because it is able to move up more accurately with various atmospheric pressure.
Reference:
Q&A Related to "Why Is Mercury Used in a Liquid Barometer instead..."
Water will freeze and break the glass tube. Mercury won't. Mercury is extremely stable and won't change to a solid or a gas. Water will.
http://wiki.answers.com/Q/Why_is_mercury_used_in_b...
Because mercury is much denser (heavier) than water. Water is so much lighter that a water barometer would have to be about 30 feet tall; a mercury barometer is about 30 inches. Source
http://answers.yahoo.com/question/index?qid=200704...
A water barometer is far too large to be used conveniently.
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When using this website please use common sense. The information provided on this site is intended for your general knowledge only and is not a substitute for professional advice.
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