In the figure below, what is the pressure of the gas in the flask (in atm) if the barometer reads 693.4 torr? $(\Delta h=8.37 \mathrm{~cm})$ Round your answer to 4 significant figures.

Note: Reference the SI prefixes and Conversion factors for non-SI units tables for additional information.
Pressure $=0.9123$ atm $\square$

Question

In the figure below, what is the pressure of the gas in the flask (in atm) if the barometer reads 693.4 torr? $(\Delta h=8.37 \mathrm{~cm})$ Round your answer to 4 significant figures.

Note: Reference the SI prefixes and Conversion factors for non-SI units tables for additional information.
Pressure $=0.9123$ atm $\square$

Accepted Answer

***A*** ∻Key Concept∻ ⚹Pressure Conversion and Manometer Reading⚹ ∻Explanation∻ ⚹To find the pressure of the gas in the flask, we need to convert the barometric pressure from torr to atm and account for the pressure difference indicated by the manometer. The conversion factor from torr to atm is $1 ext{ atm} = 760 ext{ torr}$. The pressure difference due to the height of the liquid column in the manometer is $\Delta h$ in cm of liquid, which must be converted to atm. The total pressure of the gas is the atmospheric pressure minus the pressure difference if the liquid level on the side open to the atmosphere is higher.⚹◊What is the relationship between pressure, height difference, and atmospheric pressure in a U-tube manometer setup?⍭ Generate me a similar question◊

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