At sea level, what is the standard atmospheric pressure at point A expressed in millimeters of mercury (mm Hg)?

• A. 1 mm Hg
• B. 101.3 mm Hg
• C. 1000 mm Hg
• D. 760 mm Hg

Answer: (D)

Verified step by step guidance

1. Understand that standard atmospheric pressure at sea level is a well-established physical constant used as a reference in many chemistry problems.
2. Recall that atmospheric pressure can be expressed in various units, such as atmospheres (atm), pascals (Pa), or millimeters of mercury (mm Hg).
3. Know the conversion factor between atmospheres and millimeters of mercury: 1 atm = 760 mm Hg.
4. Recognize that standard atmospheric pressure at sea level is defined as 1 atm.
5. Therefore, to find the pressure in mm Hg at sea level, multiply 1 atm by the conversion factor: \$1 \, \text{atm} \times 760 \frac{\text{mm Hg}}{\text{atm}}$.