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:

Perceptual Expectancy

The predisposition to perceive things in a certain way due to previous experiences or assumptions.

Previous Experiences

All the events, knowledge, learning, and personal developments that an individual has encountered prior to the current moment.

Just Noticeable Difference

The minimum level of stimulus intensity change needed to produce a noticeable variation in sensory experience.

Difference Threshold

The minimum difference in stimulation that a person can detect 50% of the time, also known as the just noticeable difference (JND).