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23 November, 00:52

During an investigation, similar glow sticks were placed in two beakers containing water at different temperatures. A record of the investigation is shown below:

Investigation Record

Glow Stick Beaker Water

Temperature Duration of Glow Stick in

the Beaker

A 50 °F 2 minutes

B 140 °F 2 minutes

When the glow sticks were bent, chemicals inside reacted to produce a glow. Which statement is most likely correct?

Stick A glows brighter as the rate of reaction inside it is higher.

Stick A glows brighter as the rate of reaction inside it is lower.

Stick B glows brighter as the molecules inside it move faster.

Stick B glows brighter as the molecules inside it move slower.

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Answers (1)
  1. 23 November, 03:21
    0
    The answer to this question would be: Stick B glows brighter as the molecules inside it move faster.

    The rate of reaction is influenced by its kinetic energy which was influenced by the temperature. That means the higher the temperature, the higher rate of the reaction happens.

    In this case, the reaction of the glow stick will provide light. Then the stick with higher reaction rate should glow brighter. Stick B should be brighter since it was at higher temperature.
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