Perfume sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C. Which of the following correctly compares perfume molecules at 25°C to those at 15°C?
A. At 25°C, they have more mass.
B. At 25°C, they are moving faster.
C. At 25°C, they have less kinetic energy.
D. At 25°C, they are decreasing in volume.

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05-06-2014
Physics

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Perfume sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C. Which of the following correctly compares perfume molecules at 25°C to those at 15°C?
A. At 25°C, they have more mass.
B. At 25°C, they are moving faster.
C. At 25°C, they have less kinetic energy.
D. At 25°C, they are decreasing in volume.

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Mlcparra16idn Mlcparra16idn · Answer 1 · 2014-06-05T20:03:29+08:00

Mlcparra16idn Mlcparra16idn

05-06-2014

At 25 degrees Celsius they have more kinetic energy and since it is a higher temperature it causes the molecules to vibrate and move faster. Therefore the correct answer is B.

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