Red Colored Kool-Aid Crystals Are Added to a Still Glass

question 7

Multiple Choice

Red colored Kool-Aid crystals are added to a still glass of hot water. The same amount of crystals are added to a second still glass filled with the same amount of cold water. With no stirring, which of the following would occur?

• A)Without stirring, both glasses will reach uniform color in the same amount of time since they both contain identical amounts of water.
• B)The glass of cold water will reach a uniform red color first since there are no heat convection currents to impede the distribution of the dye.
• C)The glass of hot water will reach a uniform red color first since the higher kinetic energy provides for faster moving molecules to more quickly distribute the dye.
• D)The Kool-aid crystals will never dissolve in either glass until the glasses are stirred.

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