How do you convert 190 mm Hg to kilopascals?

1 Answer
anor277
Mar 22, 2016

By conversion to atmospheres then to kilopascals. The answer is approx. #25# #kPa#

Explanation:

#1# #atm# supports a column of mercury #760# #mm# high.

#1# #atm# #=# #101.325# #kPa#

So #(190*cancel"mm Hg")/(760*cancel"mm Hg" cancel(atm^-1)# #xx101.325*kPa*cancel(atm^-1)# #=# #??# #kPa#.

Even given the safety concerns, the use of mercury manometers in laboratories will continue, as it is a very convenient way to measure pressure. Mind you, if your manometer breaks, and you spill mercury, you're in for a hell of a cleanup job - spilled mercury gets everywhere, at least you can cry over it, and you will.

Related questions
See all questions in Unit Conversions
Impact of this question
12099 views around the world
You can reuse this answer
Creative Commons License