The Apparatus Shown Is Called a Closed-End Manometer Because the Arm

question 49

Multiple Choice

The apparatus shown is called a closed-end manometer because the arm not connected to the gas sample is closed to the atmosphere and is under vacuum.
-What is the pressure (in mm Hg) of the gas inside the above apparatus if the outside pressure,P_atm,is 750 mm Hg and the difference in mercury levels,Δh,is 25 mm Hg?

• A)25 mm Hg
• B)725 mm Hg
• C)750 mm Hg
• D)775 mm Hg

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