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OpenStudy (anonymous):
Mg(s) + ½O2(g) → MgO(s) + 146 kcal/mole H2(g) + ½O2(g) → H2O(g), ΔH = -57.82 kcal/mole What type of reaction is represented by the previous two examples? endothermic or exothermic??
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OpenStudy (wolfe8):
Welcome to OpenStudy. Endothermic: reaction takes in energy. Final energy is higher than initial energy. Change in enthalpy is positive Exothermic: the opposite of above
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