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5 & 15. Energetics & thermochemistry (1)

For each question choose the answer you consider to be the best.1. When some solid ammonium nitrate was dissolved in water the temperature decreasedfrom 22 oC to 3 oC. What can be deduced from this observation? A. The dissolving is endothermic and ∆H is positive.B. The dissolving is endothermic and ∆H is negative.C. The dissolving is exothermic and ∆H is positive.

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