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## Homework Statement

A thin tube, sealed at both ends, is 1.00 m long. It initially lies horizontally, with the middle 10.0 cm containing mercury, and the two ends containing air at standard atmospheric pressure:

See picture in attachment

If the tube is now turned to a vertical position, by how much will the mercury be displaced, if the process is isothermal? You may assume that no gas passes from one side of the mercury column to the other.

## Homework Equations

P

_{1f}= hpg + P

_{2f}p=density of mercury , h=length of mercury column

P

_{1}V

_{1 }= P

_{2}V

_{2}

V

_{1 }+ V

_{2}= 0.9

## The Attempt at a Solution

Tried solving simultaneous equations but got bogus answers