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Chapter 2: Problem 8

Beaker \(A\) contains water at a temperature of \(15^{\circ} \mathrm{C}\) . Beaker \(\mathrm{B}\) contains water at a temperature of \(37^{\circ} \mathrm{C}\) . Which beaker contains water molecules that have greater average kinetic energy? Explain your answer.

Short Answer

Expert verified
The water in beaker B has a greater average kinetic energy because it is at a higher temperature.

Step by step solution

01

Understand kinetic energy

Kinetic energy is the energy of motion. With regard to molecules in a liquid, more motion translates to more kinetic energy. To make a comparison between the two beakers, you need to apply the principle that higher temperature implies higher kinetic energy.
02

Make the comparison

It's now evident that the water in beaker B, with a temperature of \(37^{\circ} \mathrm{C}\), is hotter than the one in beaker A, which is at \(15^{\circ} \mathrm{C}\). Therefore, based on the principle learned in step 1, beaker B contains water molecules with a higher average kinetic energy because it is at a higher temperature.

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