Răspunsuri

2014-04-02T15:42:32+03:00
2HCl+MgO- MgCl2+H2O. HCl+Cu- pasivare. 2HCl+ZnO-ZnCl2+H2O.
2014-04-02T19:12:08+03:00
2HCl+MgO- MgCl2+H2O. HCl+Cu- pasivare. 2HCl+ZnO-ZnCl2+H2O.