Răspunsuri

2014-10-16T18:47:32+03:00
2014-10-16T18:48:12+03:00
ZnSO4 + Pb(NO3)2 = PbSO4 + Zn(NO3)2
ZnSO4 + Pb(NO3)2 = Pb(SO4) + Zn(NO3)2