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14 September, 19:13

During a lab activity, students prepared two solutions separately at the same temperature. Later they mixed the solutions and the temperature dropped. Why?

A:there was no energy input during the chemical reaction

B:energy was absorbed during the chemical reaction

C:energy was released during the chemical reaction

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Answers (2)
  1. 14 September, 20:32
    0
    Reactions usually only happen spontaneously if they are exothermic. Therefore the best answer is:

    C:energy was released during the chemical reaction
  2. 14 September, 22:13
    0
    I think it's B because the individual properties had their own temperature and when the were mixed they observed ones temperature and cold down by sharing the same properties
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