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La reaccin, Mg (s) + 2H 2 O (l) Mg(OH) 2 (s) + H 2 (g), tiene un calor de reaccin de - 84,3 kcal/mol.

La reaccin, Mg (s) + 2H ₂ O (l) Mg(OH) ₂ (s) + H ₂ (g), tiene un calor de reaccin de - 84,3 kcal/mol. Mediante esta reaccin, cuntos gramos de Mg en polvo producen 780,0 kcal de calor?

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