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18-03-2014
Chemistry

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Please help me
Na2SO3+...=H2SO4
CaSO3+...=H2SO4
SO2+...=MgSO3
Ca3PO4=P
H3PO4+...=Ca(H2PO4)2
P+...=Mg3P2
SiO2+...=Mg2Si

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Аноним Аноним

18-03-2014

One adds water to the first two, MgS for the third, the 4th requires quite a decomposition (malformed substance -- probably Ca3(PO4)2 ), 5th is with hydrogen, 6 with atomic magnesium while the 7th also with atomic magnesium.

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