a)KBr->K(+) + Br(-) b)Ca(NO3)2->Ca(2+) + 2NO3(-) c)Al2S3->2Al(3+) + 3S(2-) d)CuSO4->Cu(2+) + SO4(2-) e)Pb(CO3)2->Pb(4+) + 2CO3(2-)
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a)KBr->K(+) + Br(-)
b)Ca(NO3)2->Ca(2+) + 2NO3(-)
c)Al2S3->2Al(3+) + 3S(2-)
d)CuSO4->Cu(2+) + SO4(2-)
e)Pb(CO3)2->Pb(4+) + 2CO3(2-)