How are mm Hg, torr, psi, atm, and Pa related to each other mathematically?
mm Hg (millimeters of mercury), torr, psi (pounds per square inch), atm (atmosphere), and Pa (pascals) are units of pressure and can be related to each other mathematically using conversion factors. Here are the mathematical relationships between these units:
1 atm = 760 mm Hg = 760 torr
1 atm ≈ 14.7 psi
1 atm = 101,325 Pa
To convert between these units, you can use the following conversion factors:
1 mm Hg = 1 torr (since they are equal)
1 atm = 760 mm Hg = 760 torr
1 psi ≈ 51.71 mm Hg (rounded to two decimal places)
1 atm ≈ 14.7 psi
1 atm ≈ 101,325 Pa
So, if you have a value in one unit and you want to convert it to another unit, you can multiply it by the appropriate conversion factor to get the desired unit.
mm Hg (millimeters of mercury), torr (named after Evangelista Torricelli), psi (pounds per square inch), atm (atmosphere), and Pa (pascal) are all units of pressure. They can be related to each other through conversion factors:
1 atm = 760 mm Hg = 760 torr = 14.7 psi = 101325 Pa
These conversion factors allow you to convert from one unit to another using simple mathematical calculations.
You memorize this.
Standard pressure
101.3kPa
1 atm
760 torr
760 mmHg
14.6 psi
32.8 ft water