September 2018 2 139 Report
1:Uno de los siguientes compuestos es hidroxido pumblico:
A:Pb(OH)2
B:Pb(OH)3
C:Pb(OH)4
D:Pb(OH)5

2:la formula del sulfato de hierro (III) es:
A:Fe(SO)3
B:Fe3(SO)2
C:Fe2(SO)3
D:Fe2(SO)4




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