Balance the following equations:
(i) `Na+O_(2)toNa_(2)O`
(ii) `H_(2)O_(2)toH_(2)O+O_(2)`
(iii) `Mg(OH)_(2)+HCl to MgCl_(2)+H_(2)O`
(iv) `Fe+O_(2)to Fe_(2)O_(3)`
(v) `Al(OH)_(3)toAl_(2)O_(3)+H_(2)O`
(vi) `NH_(3)+CuOtoCu+N_(2)+H_(2)O`
(vii) `Al_(2)(SO_(4))_(3)+NaOHto Al(OH)_(3)+Na_(2)SO_(4)`
(viii) `HNO_(3)+Ca(OH)_(2)toCa(NO_(3))_(2)+H_(2)O`
(ix) `NaOH+H_(2)SO_(4)toNa_(2)SO_(4)+H_(2)O`
(x) `BaC l_(2)+H_(2)SO_(4)toBaSO_(4)+HCl`

Answer

`{:((i),4Na+O_(2)to2Na_(2)O,(ii),2H_(2)O_(2)to2H_(2)O+O_(2)),((iii),Mg(OH)_(2)+2HCl to MgCl_(2)+2H_(2)O,(iv),4Fe+3O_(2)to2Fe_(2)O_(3)),((v),2Al(OH)_(3)toAl_(2)O_(3)+3H_(2)O,(vi),2NH_(3)+3CuOto3Cu+N_(2)+3H_(2)O),((vii),Al_(2)(SO_(4))_(3)+6NaOHto2Al(OH)_(3)+3Na_(2)SO_(4),(viii),2HNO_(3)+Ca(OH)_(2)toCa(NO_(3))_(2)+2H_(2)O),((ix),2NaOH+H_(2)SO_(4)toNa_(2)SO_(4)+2H_(2)O,(x),BaCl_(2)+H_(2)SO_(4)toBaSO_(4)+2HCl):}`