A flask containing argon gas is connected to a closed-ended mercury manometer. T
ID: 531300 • Letter: A
Question
A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is under vacuum. If the mercury level in the closed arm is 230. mm above that in the arm connected to the flask, what is the argon pressure, in torr?
A.
-230.
B.
230.
C.
530.
D.
790.
E.
none of these choices is correct
A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is under vacuum. If the mercury level in the closed arm is 230. mm above that in the arm connected to the flask, what is the argon pressure, in torr?
Explanation / Answer
Ans B) 230
The pressure in mercury mm of a manometer is the same as that of torr. So if it rises 230 mm in the arm connected to flask the pressure is 230 torr.
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