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Question

Cmplete and balance the following equations:
(a) Na +O2
(b) Na2O+H2O
(c) Fe(s)+H2O(g)Red heat−−−−
(d) Cu(NO3)2(aq)+Zn(s)

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Solution

(a) 4Na+O22Na2O

(b) Na2O+H2O2NaOH

(c) 3Fe+4H2ORed heat−−−−Fe3O4+4H2

(d) Zn+Cu(NO3)2Zn(NO3)2+Cu


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