A Solution Containing 0

question 71

Multiple Choice

A solution containing 0.102 g of an unknown compound dissolved in 100. mL of water has an osmotic pressure of 28.1 mmHg at 20.°C. What is the molar mass of the compound? (R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg)

• A) 663 g/mol
• B) 0.872 g/mol
• C) 1.15 g/mol
• D) 727 g/mol
• E) 1.10 × 10² g/mol

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Definitions:

Reticular Formation

The reticular formation is a complex network of nerve pathways in the brainstem that plays a key role in controlling arousal, attention, and sleep-wake transitions.

Outside Noise

External sounds or disturbances that interfere with the intended or desired reception of a message or the focus on a task.

Relay Station

A term often used in neuroscience to describe regions or structures in the nervous system that transfer information from one area to another.

Thalamus

a structure in the brain that acts as a relay station for sensory signals to the cerebral cortex.