ułóz wzory sumaryczne
a) tlenek sodu
b) tlenek siarki 4
c) tlenek zelaza 3
d) tlenek magnezu
a) Na2O
b) SO2
c) Fe2O3
d) MgO
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a) Na2O
b) SO2
c) Fe2O3
d) MgO
a) Na2O
b) SO2
c) Fe2O3
d) MgO