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1. Hoàn thành những phản ứng hóa học sau : a) . . . + . . . MgO b) . . . + . . . P2O5 c) . . . + . . . Al2O3 e) H2O . . . + . . . f) KClO3 . . . + . . . g) KMnO4 K2MnO4 + MnO2 + . . . h) Mg + HCl MgCl2 + . . . i) Al + H2SO4 Al2(SO4)3 + . . .
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