The Mole Fraction of Potassium Nitrate in an Aqueous Solution

question 25

Multiple Choice

The mole fraction of potassium nitrate in an aqueous solution is 0.0194. The solution's density is 1.0627 g/mL. Calculate the molarity of the solution.

• A)0.0194 M
• B)0.981 M
• C)1.05 M
• D)1.96 M
• E)19.4 M

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Definitions:

ERP

Event-Related Potentials; brain responses that are the direct result of a specific sensory, cognitive, or motor event.

Brain Activity

The functioning and processes occurring within the brain, including neural activity and the coordination of mental and physical actions.

Medulla

The base of the brainstem; controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion.

Pons

A crucial structure in the brainstem that plays key roles in sleep and dreaming, arousal, and coordination of movement.