( Use ↑ and ↓ please ! )
Balancing a chemical equation
$H_2S$ +
$O_2$
→
$SO_2 $ +
$H_2O $
$2H_2S$ $+$ $3O_2$ $\longrightarrow$ $2SO_2$ $+$ $2H_2O$
$NH_3$ +
$O_2$
→
$NO$ +
$H_2O $
$4NH_3$ $+$ $5O_2$ $\longrightarrow$ $4NO$ $+$ $6H_2O$
$CO$ +
$Fe_3O_4$
→
$CO_2$ +
$H_2O $
$CO$ $+$ $Fe_3O_4$ $\longrightarrow$ $3FeO$ $+$ $CO_2$
$C_2H_6O$ +
$O_2$
→
$CO_2$ +
$H_2O $
$C_2H_6$ $+$ $3O_2$ $\longrightarrow$ $2CO_2$ $+$ $3H_2O$
