Question

Which of these pressure is the lowest?

1.1 atm,
2 .16.7 psi,
3 .740 mm Hg ,
4 .111 458 Pa

Answer 1

To compare the pressures given in different units, we convert them to atmospheres (1 atm = 760 mm Hg = 101.325 kPa = 14.7 psi). The lowest pressure is 740 mm Hg, which is approximately 0.974 atm.

Step-by-step explanation:

The question is asking which of the following pressures is the lowest: 1.1 atm, 16.7 psi, 740 mm Hg, 111 458 Pa. To compare the different units of pressure, we should convert them to the same unit. Given the equivalencies 1 atm = 760 mm Hg = 101.325 kPa (or 101,325 Pa), and 1 atm = 14.7 psi, we can convert these pressures into a common unit of atmospheres (atm) for comparison:

• 1.1 atm stays the same, 1.1 atm.
• 16.7 psi is equivalent to approximately 1.135 atm.
• 740 mm Hg is equivalent to approximately 0.974 atm.
• 111 458 Pa is equivalent to approximately 1.1 atm (using the conversion 1 atm = 101,325 Pa).

Looking at these values, 740 mm Hg or 0.974 atm is the lowest pressure.