A Sample of 20

question 121

Multiple Choice

A sample of 20.0 g of a nonvolatile, nonelectrolyte (molar mass = 120 g/mol) is dissolved in 10.0 grams of ethanol (C₂H₅OH) . If the vapor pressure of pure ethanol at the temperature of the experiment is 0.250 atm, what is the vapor pressure of ethanol above the solution?

• A) 0.250 atm
• B) 0.083 atm
• C) 0.125 atm
• D) 0.568 atm
• E) 0.141 atm

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Definitions:

Mudflows

Rapid downhill movement of water-saturated earth material, primarily composed of mud and often triggered by heavy rain or volcanic activity.

Pahoehoe Flows

A type of basaltic lava flow characterized by a smooth, unbroken surface and often described as having a ropey texture, associated with Hawaiian and other volcanic eruptions.

Lava Flows

Streams of molten rock that pour out of a volcano during an eruption.

Injected Magma

Magma that has been forcefully inserted into cracks, fissures, or between layers of existing rock, often leading to the formation of igneous intrusions.