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Ni2o3 , Li2o , CuCl2 , MnO3
Ni2O3
masa Ni 59u*2=118u masa tlenu 16u*3=48u
Ni:0 =118u:48u=59u:24u
Li2O
masa litu 7u*2=14u masa tlenu 16u
Li:O=14u:16u=7u:8u
CuCl2
masa miedzi 64u masa chlorku 35,5u*2=71u
Cu:Cl=64u:71u
MnO3
masa manganu 55u masa tlenu16u*3=48u
Mn:O=55u:48u