Complete and balance the following equations:
(a) $Na + O_{2} \underset{}{\to}$
(b) ${Na}_{2} O + H_{2} O \underset{}{\to}$
(c) $Fe (s) + H_{2} O (g) \overset{Red heat}{\to}$
(d) $Cu ({NO}_{3})_{2} (aq) + Zn (s) \underset{}{\to}$

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Solution

(a) 4Na(s) + O₂(g) $\to$ 2Na₂O(s)

(b) Na₂O(s) + H₂O(l) $\to$ 2NaOH (aq)

(c) 3Fe(s) + 4H₂O(g) $\overset{R e d H e a t}{\to}$ Fe₃O₄(s) + 4H₂(g)

(d) Cu(NO₃)₂(aq) + Zn(s) $\to$ Zn(NO₃)₂(aq) + Cu(s) (a)(a Zn (s) −→−−−−

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Complete 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) →

(a) 4Na(s) + O2(g) → 2Na2O(s) (b) Na2O(s) + H2O(l) → 2NaOH (aq) (c) 3Fe(s) + 4H2O(g) → Red Heat Fe3O4(s) + 4H2(g) (d) Cu(NO3)2(aq) + Zn(s) →Zn(NO3)2(aq) + Cu(s) (a)(a Zn (s) −→−−−−

Complete and balance the following equations:
(a) $Na + O_{2} \underset{}{\to}$
(b) ${Na}_{2} O + H_{2} O \underset{}{\to}$
(c) $Fe (s) + H_{2} O (g) \overset{Red heat}{\to}$
(d) $Cu ({NO}_{3})_{2} (aq) + Zn (s) \underset{}{\to}$

(a) 4Na(s) + O₂(g) $\to$ 2Na₂O(s)

(b) Na₂O(s) + H₂O(l) $\to$ 2NaOH (aq)

(c) 3Fe(s) + 4H₂O(g) $\overset{R e d H e a t}{\to}$ Fe₃O₄(s) + 4H₂(g)

(d) Cu(NO₃)₂(aq) + Zn(s) $\to$ Zn(NO₃)₂(aq) + Cu(s) (a)(a Zn (s) −→−−−−