Write the chemical formula for the following compound 

Ammonium sulphate

Write the chemical formula for the following compound 

Calcium oxide

Write the chemical formula for the following compound 

Aluminium phosphate

Balance the following chemical reaction:

$\mathrm{AgCl}\left(\mathrm{s}\right)\to \mathrm{Ag}\left(\mathrm{s}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)$

Balance the following chemical reaction:

${\mathrm{N}}_2+{\mathrm{H}}_2\to {\mathrm{NH}}_3$

Balance the following chemical reaction:

$\mathrm{Zn}+\mathrm{HCl}\to {\mathrm{ZnCl}}_2+{\mathrm{H}}_2$

Balance the following chemical reaction:

$\mathrm{Zn}+\mathrm{NaOH}\to {\mathrm{NaZnO}}_2+{\mathrm{H}}_2$

The question given in the textbook seems to be wrong, modified question is 

$\mathrm{Zn}+\mathrm{NaOH}\to {\mathrm{Na}}_2{\mathrm{ZnO}}_2+{\mathrm{H}}_2$