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Which of the reactions are exothermic? W\ce{2Mg (s) +0_2(g) -> 2MgO (8) }{\quad \quad \quad \quad\quad quad-www- \Delta H=-12

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Those reactions which have negative value of AH to be exotheemic. correct aptions all, is) (9) @ 2 Mg + O2 200 AHF - 203 t/mothank you vmuch....

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Which of the reactions are exothermic? W\ce{2Mg (s) +0_2(g) -> 2MgO (8) }{\quad \quad \quad \quad\quad...
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