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juin [17]
3 years ago
13

Which change is exothermic?

Chemistry
1 answer:
Lina20 [59]3 years ago
6 0
The answer is (1) freezing of water. The energy of different status is increase from solid to liquid to gas. So the change of liquid to solid is exothermic. The other three are endothermic.
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Oxidation number of Mg3N2
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