Bonjour a tous URGENT SVP
équation chimique

- pbo + c ⇒ pb + co2
- c6 h14 + o2 ⇒ co2 + h2o
- h2s + so2 ⇒ s h2o
- fe3o4 + o2 ⇒ fe2o
- al + br2 ⇒ albr3
- mg + so2 ⇒ mgo + s
- c3h8 + cl2 ⇒ c + hcl

merci d'avance
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