Answer:
The reaction of Sodium Cyanide (NaCN) with Hydrochloric Acid (HCl), Calcium Oxide (CaO), and Water (H2O) isn't a typical combination in chemical reactions, and it's hard to predict the exact products without more specific conditions.
However, in a simple reaction between Sodium Cyanide (NaCN) and Water (H2O), it can produce Sodium Hydroxide (NaOH) and Hydrogen Cyanide (HCN).
