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.
P1f = hpg + P2f p=density of mercury , h=length of mercury column
P1V1 = P2V2
V1 + V2 = 0.9
The Attempt at a Solution
Tried solving simultaneous equations but got bogus answers