What Is the Molality of a Solution Prepared by Dissolving

question 62

Multiple Choice

What is the molality of a solution prepared by dissolving 86.9 g of diethyl ether, C₄H₁₀O, in 425 g of benzene, C₆H₆?

• A)0.362 m
• B)0.498 m
• C)2.01 m
• D)2.76 m
• E)None of these choices are correct.

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Definitions:

Cranial Nerves

Twelve pairs of nerves that emerge directly from the brain, not the spinal cord, and supply the head and neck with motor and sensory innervation.

Neocortex

The most recently evolved, outer layer of the cerebral cortex that plays a key role in higher brain functions such as sensory perception, cognition, and motor control.

Cranial Structures

The bones and associated tissues forming the skull that protect the brain and support the structures of the face.

Tissue Layer

A grouping of similar cells and their extracellular matrix that together perform specific functions within the body.