the reaction of calcium hydroxide and hydrochloric acid

Write balanced net ionic equations for the following reactions:
the reaction of nitrous acid (a weak acid) and sodium hydroxide in an aqueous solution

Balance the following equations:
$\mathrm{Fe}(\mathrm{s})+\mathrm{H}_2 \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{Fes}_{\mathrm{S}} \mathrm{O}_4$ (s) $+\mathrm{H}_2(\mathrm{~g})$

Balance the following equations:\

$$\mathrm{SiO}_2(\mathrm{~s})+\mathrm{C}(\mathrm{s}) \rightarrow \mathrm{Si}(\mathrm{s})+\mathrm{CO}(\mathrm{g})$$

the reaction of ammonia with phosphoric acid