$15) CH_{4}$ + $2O_{2}$ → $CO_{2}$ + $2H_{2}O$
$16) C_{2}$$H_{4}$ + $3O_{2}$ → $2CO_{2}$ + $2H_{2}O$
$17) 2C_{5}$$H_{10}$ + $15O_{2}$ → $10CO_{2}$ + $10H_{2}O$
$18) C_{x}$$H_{y}$ + $(x + \frac{y}{4})O_{2}$ → $xCO_{2}$ ↑ + $\frac{y}{2}$$H_{2}O$
$19) 2Fe(OH) _{3}$ → $Fe_{2}$$O_{3}$ + $3H_{2}O$
$20) 2NaNO_{3}$ → $2NaNO_{2}$ + $O_{2}$
$21) 2Al_{}$ + $3CuCl_{2}$ → $2AlCl_{3}$ + $3Cu_{}$
$22) Fe_{2}$$O_{3}$ + $6HCl_{}$ → $2FeCl_{3}$ + $3H_{2}O$
$23) BaCl_{2}$ + $2AgNO_{3}$ → $2AgCl_{}$ + $Ba(NO_{3})$$_{2}$ ↓
$24) H_{2}$ + $Fe_{3}$$O_{4}$ → $3Fe_{}$ + $2H_{2}O$
$25) 2Fe(OH)_{2}$ + $\frac{1}{2}O_{2}$ + $H_{2}O$ → $2Fe(OH)_{3}$ ↓
Nhớ cho mik ctlhn nha!! ❤❤❤
