I think ur answer is =


2HNO3+Ca(OH)2---->Ca(NO3)2+2H2O

How to balance the equation HNO3 + Ca(OH)2 → Ca(NO3)2 + H2O?

Step 1: Write the Unbalanced Equation
HNO3 + Ca(OH)2 → Ca(NO3)2 + H2O

Step 2: Identify the Elements and their Number of Atoms
HNO3: 1 hydrogen, 1 nitrogen, 3 oxygen
Ca(OH)2: 1 calcium, 2 oxygen, 2 hydrogen
Ca(NO3)2: 1 calcium, 2 nitrogen, 6 oxygen
H2O: 2 hydrogen, 1 oxygen

Step 3: Balance the Elements
- Balance the calcium: There is 1 calcium on the left, and 1 calcium on the right. Balanced.
- Balance the nitrogen: There is 1 nitrogen on the left, and 2 nitrogen on the right. Add a coefficient of 2 before HNO3.
2HNO3 + Ca(OH)2 → Ca(NO3)2 + H2O
- Balance the oxygen: There are 6 oxygen on the right, and 3 oxygen on the left. Add a coefficient of 3 before H2O.
2HNO3 + Ca(OH)2 → Ca(NO3)2 + 3H2O
- Balance the hydrogen: There are 6 hydrogen on the right, and 2 hydrogen on the left. Add a coefficient of 6 before HNO3.
6HNO3 + Ca(OH)2 → Ca(NO3)2 + 3H2O

Step 4: Check the Balance
- Calcium: 1 Ca on both sides
- Nitrogen: 2 N on both sides
- Oxygen: 6 O on both sides
- Hydrogen: 6 H on both sides

Conclusion
The balanced equation is 6HNO3 + Ca(OH)2 → Ca(NO3)2 + 3H2O. It is important to balance chemical equations because it ensures that the law of conservation of mass is obeyed, meaning that the same number and type of atoms are present on both sides of the equation.