Here's how to write the balanced equation for the neutralization of hydrogen nitrate (HNO₃) and calcium hydroxide (Ca(OH)₂):

1. Write the reactants and products:

* Reactants: HNO₃ (nitric acid) and Ca(OH)₂ (calcium hydroxide)

* Products: Ca(NO₃)₂ (calcium nitrate) and H₂O (water)

2. Write the unbalanced equation:

HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + H₂O

3. Balance the equation:

* Hydrogen (H): There are 3 hydrogen atoms on the left and 2 on the right. To balance, add a coefficient of 2 in front of HNO₃ and a coefficient of 2 in front of H₂O.

* Nitrogen (N): The nitrogen atoms are already balanced (2 on each side).

* Calcium (Ca): The calcium atoms are already balanced (1 on each side).

* Oxygen (O): The oxygen atoms are already balanced (8 on each side).

The balanced equation is:

2 HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2 H₂O