Grace injured her ankle while running a relay race at the family reunion. Her aunt breaks the inner, activator portion of an instant cold pack releasing the solid urea into the surrounding water. How could Grace modify this device to make it colder faster?
A) Expand the volume of the urea in the activator cell.
B) Maximize the overall size and volume of the cold pack.
C) Increase the concentration both main and activator phases.
D) Include a slow release activator solution to increase longevity.
Answers: 3
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