Question

Explain why large mercury drops form oral ball on a glass slide
Explain why the height of mercury column in a mercury barometer would change if the barometer is taken on top of a high mountain

Answer 1

Answer:

Air molecules push down on the surface of the mercury. Because the inside of the tube is a vacuum, the mercury rises inside the tube. The height to which the mercury rises is dependent on the external air pressure

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Answer 2

Answer:

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