A Gas Vessel Is Attached to an Open-End Manometer Containing

question 129

Multiple Choice

A gas vessel is attached to an open-end manometer containing a nonvolatile liquid of density 0.791 g/mL as shown below. The difference in heights of the liquid in the two sides of the manometer is 43.4 cm when the atmospheric pressure is 755 mm Hg.Given that the density of mercury is 13.6 g/mL,the pressure of the enclosed gas is ________ atm.

• A)1.03
• B)0.967
• C)0.993
• D)0.990
• E)0.987

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Definitions:

Sandstone

A sedimentary rock consisting of sand-sized mineral particles or rock fragments.

Basaltic Lava

A type of magma or lava that is low in silica and has a relatively low viscosity, leading to smoother flow characteristics.

Obsidian/Glass

A natural volcanic glass formed from the rapid cooling of acidic lava, known for its conchoidal fracture and sharp edges.

Ash

Fine particles of volcanic rock and glass created during volcanic explosions, which can be carried long distances by the wind.