# 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

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

###### 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

$\overline{){{\mathbf{P}}}_{\mathbf{g}\mathbf{a}\mathbf{s}}{\mathbf{=}}{{\mathbf{P}}}_{\mathbf{a}\mathbf{t}\mathbf{m}}}$

When Pgas is pushing harder than Patm

###### 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