A Saline Solution Is Administered Intravenously to Patients Who Cannot

question 96

Multiple Choice

A saline solution is administered intravenously to patients who cannot take fluid orally and are in danger of dehydration. The osmotic pressure of this solution must match that of blood to prevent hemolysis or crenation of blood cells. What mass of sodium chloride (58.44 g/mol) is needed to produce 100.0 mL of saline solution with an osmotic pressure of 7.83 atm at a body temperature of 37°C?

• A) 0.899 g
• B) 8.99 g
• C) 18.0 g
• D) 1.80 g
• E) 0.450 g

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Definitions:

Figure-Ground Organization

A principle of perception that enables us to distinguish objects (figure) from their background (ground) based on factors like contrast and contour.

Bottom-Up Processing

An approach in perception where processing starts with the sensory input and works its way up to the formation of a perception without preconceived knowledge.

Size Constancy

The phenomenon that one’s perception of an object remains constant even as the retinal image of the object changes size (e.g., because the object has moved closer to or farther away from the perceiver).

Odd-Quadrant Discrimination

A cognitive test focusing on the ability to distinguish between stimuli that vary according to a specific criterion, placed in non-standard quadrants.