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A Standard Atmospheric pressure excerts a force on a mercury filled glass tube with one end closed to make the metal rise 29.92 inches. In a perfect vacuum environment, theoreticaly, there should be no rise on the column of mercury; answer is zero inches.
About 2 1 pound per square inch = 2.0362... inches of mercury
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That could depend on several different factors, such as altitude etc... I do believe that at about sea level its -14.7 psi.
The density of mercury is 13.534 grams per milliliter.0.190 liter = 190 millilitersSo a full container's worth of mercury would comprise (13.534) x (190) =2,571.46 grams = 2.57146 kilograms of mass.