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2014-11-17T09:07:16+02:00
Fe +S=FeS

1mol de fe react cu 1 mol de S
   56 g fe.................32 g sulf
21000g fe ..........................x g sulf

x=12000g =12 kg 

in exces ai S 24 kg-12 kg=12 kg

se produc  56g Fe------------------88 g FeS
                21000g Fe...............Y g

Y=33000g=33 kg FeS


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