Complete and balance the following equation:HNO^3(aq)+Mg(OH)^2(aq)? a)Provide a net ionic equation 

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`HNO_3` and `Mg(OH)_2` are strong acid and base respectively.

`HNO_3_(aq) rarr H^(+)_(aq)+NO_3^(-)_(aq)`

`Mg(OH)_2_(aq) rarr Mg^(2+)_(aq)+2OH^(-)_(aq)`

`2HNO_3_(aq)+Mg(OH)_2_(aq) rarr Mg(NO_3)_2_(aq)+2H_2O_((l))`

Since `Mg(NO_3)_2` is dirived from a strong acid and a strong base it is fully ionized in water.

`Mg(NO_3)_2_(aq) rarr Mg^(2+)_(aq)+2NO_3^(-)_(aq)`

Ionic equation

`H^(+)_(aq)+NO_3^(-)_(aq)+Mg^(2+)_(aq)+2OH^(-)_(aq) rarr Mg^(2+)_(aq)+2NO_3^(-)_(aq)+2H_2O_((l))`

There are common ions in both sides. Cancelling the common ions will give the net ionic equation.

`H^+_(aq)+OH^-_(aq) rarr H_2O_((l))`

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