100p urgenttttttttttttttttttttttt ​

100p Urgenttttttttttttttttttttttt class=

Răspuns :

Răspuns:

A1) CaO + SO3 = CaSO4

A2) FeSO4 + Ca = CaSO4 + De

A3) CaO + H2SO4= .........

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