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Chemistry, 08.05.2021 01:00 cupcake20019peehui

During the chemical reaction that takes place inside a hot pack, is energy being released to the surroundings or taken in from the surroundings and why?

Energy is taken in because all chemical reactions take in energy.
Energy is released because the temperature of the surroundings increases.
Energy is taken in because the temperature of the surroundings increases.
Energy is released because all chemical reactions release energy.
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