How do you convert 2.750 mmHg to atmospheres?

1 Answer
anor277
Mar 13, 2017

#2.750*mm*Hg-=3.618xx10^-3*atm#

Explanation:

We know that one atmosphere's pressure will support a column of mercury #760*mm*Hg# high.

And thus a pressure of, #2.750*mm*Hg-=(2.750*mm*Hg)/(760*mm*Hg*atm^-1)=3.618xx10^-3*atm#

Columns of mercury are widely used in the laboratory to measure small changes in pressure for the reason that we can easily measure the heights of mercury columns, and the difference between them.

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