Odpowiedzi

2010-02-04T16:58:31+01:00
2K+S ->K2S
Fe2O3 +3H2-->2 Fe+3H2O

2010-02-04T17:29:15+01:00
2 K + S --> K₂S

Fe₂O₃ + 3 H₂ --> 2 Fe + 3 H₂O