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Chemistry, 04.01.2020 02:31 LoLGuy133

Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic. what must the scientist have observed?
the reaction released heat.
the reaction formed a gas.
the reaction sped up when a catalyst was added.
the reaction caused the container to get cold.

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Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic....
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