A Phase Diagram of Temperature Versus Composition for a Mixture

question 3

Multiple Choice

A phase diagram of temperature versus composition for a mixture of the two volatile liquids octane (bp = and decane (bp = 126°C) is shown.
-Assume that you start with a mixture containing 0.80 mol of decane and 0.20 mol of octane,what is the vapor composition at the boiling point?

• A)100% decane
• B)composition at point b
• C)composition at point c
• D)composition at point e

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Definitions:

Central Vents

The main conduit in a volcanic system through which magma travels from beneath the Earth's surface to its exterior.

Flood Basalts

Large volcanic eruptions that cover large areas of the Earth's surface with basalt lava, forming thick lava flows.

Columbia Plateau

A geologic and geographic region in the Pacific Northwest of the United States characterized by a level area of basaltic lava flows.

Magma Volumes

The quantity of magma, which is molten rock beneath the Earth's surface.