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Complete and balance the following equations: (a). `Na+O_(2)to` (b). `Na_(2)O+H_(2)Oto` (c).
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Complete and balance the following equations: (a). `Na+O_(2)to` (b). `Na_(2)O+H_(2)Oto` (c). `Fe(s)+H_(2)O(g)overset(\"Red heat\")to` (d). `Cu(NO_(3))_(2)(aq)+Zn(s)to`
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