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How do you figure out atmospheric pressure?
I am very confused. If atmospheric pressure is 745mm HG, what is atmospheric pressure in mm H2O? Does mercury have anything to do with this? Mercury is 13.5g/mL
1 Answer
- 1 decade agoFavorite Answer
13.5 x 745 = 10057.5mm H2O
Atmospheric pressure is meassured with a liquid and any liquid will do but to get the instrument in a resonable size a heavy liquid like mercury is used heck they could have used water or vodka if they prefered even milk could be used but it keeps things small using a heavy liquid. therefore mercury.
