Chemical Reactions:

$2$a$.$ Complete the following chemical reactions, balance them, state the type of reaction:

$C_3{H}_8+O_2$

$Zn+HCl$

$Pb(N{O}_3{)}_2+KI$

$KCl{O}_3$

$H_2+N_2$

Stoichiometry:

Potassium superoxide, $K{O}_2,$ is used in rebreathing gas masks to generate oxygen.

$4K{O}_2(s)+2H_{2}O(l)4$KOH$(s)+3O_2(g)$

$17\mathrm{.}5g$ of potassium superoxide are combined with $2\mathrm{.}5mL$ of water $)=(1\mathrm{.}000\frac{g}{m}L.$ How many liters of oxygen are generated at $25\mathrm{.}0C$ and $-$atm $\frac{?}{\text{m}\text{o}\text{l}}-K.$