Jawabanmu

2014-01-22T20:43:08+07:00
Fe+S⇒FeSKOH+HCl⇒KCl+H₂O
Fe = 1=a
S = 1 =a
K = a=c
O=a =d
H=a=2d
Cl= b=c
⇒a=c  
  1=c sama dg b
⇒ a=2d
    1=2d
    d=1/2
Fe+S⇒FeSKOH+HCl⇒KCl+H2O
sudah setara
1 3 1
2014-01-22T21:00:03+07:00
2Fe+2S => 2FeSKOH+2HCl => 2KCl+2H₂O