A closed-end manometer was attached to a vessel containing argon. The difference in the mercury levels in the two arms of the manometer was 11.8 cm. Atmospheric pressure was 783 mm Hg. The pressure of the argon in the container was __________ mm Hg.
A)118
B)661
C)771
D)795
E)882

Question

Quizplus · Accepted Answer

In a closed-end manometer, the pressure of the gas is equal to the difference in mercury levels. Therefore, the pressure of the argon is 11.8 cm, which is equivalent to 118 mm Hg (since 1 cm Hg = 10 mm Hg).

A Closed-End Manometer Was Attached to a Vessel Containing Argon