Problem: The barometeric pressure was 749 mmHg when the open end manometer attached to a flask holding a gas read 13.0 mmHg. (mercury level highest on the side connected to the flask.) What is the pressure of the gas in the flask in kilopascals? 1.00 atm = 101.3 kPa

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FREE Expert Solution

We’re being asked to determine the pressure of a gas (in kPa) using an open-end manometer.

A manometer allows you to determine the pressure of a gas (Pgas) sample by using the atmospheric pressure (Patm) and the difference in the height of mercury (h).


Different conditions for an open-end manometer are illustrated below:

When Pgas is pushing the same force as Patm

Pgas=Patm


When Pgas is pushing harder than Patm

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Problem Details

The barometeric pressure was 749 mmHg when the open end manometer attached to a flask holding a gas read 13.0 mmHg. (mercury level highest on the side connected to the flask.) What is the pressure of the gas in the flask in kilopascals? 1.00 atm = 101.3 kPa

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Our tutors have indicated that to solve this problem you will need to apply the Manometer concept. You can view video lessons to learn Manometer. Or if you need more Manometer practice, you can also practice Manometer practice problems.

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Based on our data, we think this problem is relevant for Professor Ernst's class at UTAH.