pH and pOH of strong solutions

You have one strong acid and one strong base. You will find the hydronium and hydroxide concentrations, then the pH and pOH of each.

The idea. A strong acid gives all its $\text{H}_3\text{O}^+$, a strong base all its $\text{OH}^-$. Then $K_w$ gives the other ion, and $\text{pH} = -\log_{10}[\text{H}_3\text{O}^+]$.

Your tasks.

1. Set h_acid to the hydronium concentration of the nitric acid, in mol/L.
2. Set ph_acid to its pH.
3. Set oh_base to the hydroxide concentration of the calcium hydroxide, in mol/L. It gives two $\text{OH}^-$ per unit.
4. Set ph_base to its pH.