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zad.1
Zn+ H2SO4--> ZnSO4 + H2
30g x dm3
65g 22,4 dm3
x= 10,3 dm3 (H2)
zad. 2
konfiguracja:
Mg 2+
1s2 2s2 2p6
S 2-
1s2 2s2 2p6 3s2 3p6