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. Experimentalmente se comprueba que 5,58 g de hierro se combinan con 3,21 g de
azufre obteniéndose un compuesto llamado sulfuro de hierro (II).
a) Calcula la masa de hierro necesaria para que reaccione con 1,23 g de azufre y se
obtenga este sulfuro de hierro (II).
b) ¿En qué ley fundamental se basa la respuesta a la pregunta formulada? Enúnciala.
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. Experimentalmente se comprueba que 5,58 g de hierro se combinan con 3,21 g de
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