At 0m (sea level) what is the atmospheric pressure?

1 Answer
anor277
Aug 13, 2017

By definition it's #1*"atmosphere"#......

Explanation:

Most chemists would use atmospheres to measure pressure, as it is quite an intuitive unit. #"1 atmosphere"# of pressure will also support a column of mercury that is #760*mm# high; and this is a VERY convenient unit for high vacuums and small pressure differences (convenient until you break the mercury manometer and get mercury all over the lab!).

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In kilopascals, #1*atm-=101.3*kPa#, where #1*"Pascal"-=1*"Newton"*m^-2#, a force per unit area, a pressure as required.

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