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2Ca+O2 - 2CaO
S+2HCl ->H2S+Cl2
Al₂O₃+3H₂SO₄->Al₂(SO₄)₃+3H₂O
2.
chlorek magnezu: MgCl2
24:71
3.Ustal wzór sumaryczny niżej podanych soli :
- azotan(V)litu LiNO3
- azotan(III)potasu KNO2
- siarczan(VI)wapnia CaSO4
- chlorek sodu NaCl
- siarczek magnezu MgS