Chemistry, 30.10.2020 21:00 ayowazzzgood
A type of cold pack has two separate sections inside. One section contains a liquid and the other section contains a powder. When the cold pack is squeezed, the section that holds the liquid breaks. When the liquid combines with the powder, the pack becomes very cold. Which is the best explanation why the temperature of the pack decreases when the liquid and powder combine?
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A type of cold pack has two separate sections inside. One section contains a liquid and the other se...
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