Which of these pressures is the lowest? 1.1 atm, 16.7 psi, 740 mm Hg, 111 458 Pa
740 mm Hg
You need to memorize standard pressure in each unit.
http://www.jiskha.com/display.cgi?id=1272497506
If you know those, three of the above are above standard pressure, one is below.
740 mm Hg
Which of these pressures is the lowest? 1.1atm, 16.7psi, 740mm Hg, 111458 pa
To determine which of these pressures is the lowest, we need to compare them. However, since the units of pressure are different, we need to convert them to a common unit before making the comparison.
Let's convert each pressure to atmospheres (atm), which is commonly used as a standard unit of pressure:
1. 1.1 atm (already in atm)
2. 16.7 psi: To convert psi to atm, we can use the conversion factor 1 atm = 14.7 psi.
Therefore, 16.7 psi * (1 atm / 14.7 psi) = 1.13 atm (rounded to two decimal places)
3. 740 mm Hg (millimeters of mercury): To convert mm Hg to atm, we can use the conversion factor 1 atm = 760 mm Hg.
Therefore, 740 mm Hg * (1 atm / 760 mm Hg) = 0.97 atm (rounded to two decimal places)
4. 111,458 Pa (Pascals): To convert Pa to atm, we can use the conversion factor 1 atm = 101325 Pa.
Therefore, 111,458 Pa * (1 atm / 101325 Pa) = 1.10 atm (rounded to two decimal places)
Now that we have converted all pressures to atm, we can compare them:
1.1 atm, 1.13 atm, 0.97 atm, 1.10 atm
From the conversions, we can see that the lowest pressure is 0.97 atm, which corresponds to 740 mm Hg.