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What can be mixed to produce a very cold effect that doesn't give off an unsafe gas?
Wiki User
∙ 9y ago
Instant cold packs use water and ammonium nitrate. The ammonium nitrate is a powder found inside the cold pack, and the water is inside a plastic container inside the cold pack. When the plastic container containing the water is broken and mixed with the ammonium nitrate, the water dissolves the ammonium nitrate, which is overall an endothermic reaction, causing the cold pack to get cold.
Wiki User
∙ 9y ago
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