Why we use mercury (Hg) in barometer instead of water(H2O)? Explain.
Answers
Answered by
2
Explanation:
Mer.cury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmosp.heric pressure. A bar.ometer using water, for inst.ance, would need to be 13.6 times taller than a mer.cury barom.eter to obtain the same press.ure difference.
Answered by
0
we use mercury (Hg) in barometer instead of water because of the following reasons :-
1)Water is relatively less dense. Mercury is 13.6 times more dense than water. SO, If you use water, you have to have the length of barometer of length (or height) 13.534 times the length of mercury barometer, which may be more than 11 meter in length.
2)Also mercury as compared to water, has comparatively less specific heat and good conductor of heat, could come to the same temperature of the atmosphere more quickly.
Similar questions