Stabileste coeficientii urmatoarelor ecuatii chimice: 1.Mg+O2-->MgO 2.H2+I2-->HI 3.NaOH+AlCl3-->Al(OH)3 o sageata in jos+NaCl 4.NaHCO3-->pe sageata scrie "t Grade" Na2CO3 o sageata in sus+H2O 5.Fe+HCl-->FeCl2+H2 o sageata in sus 6.KOH+H3PO4-->K3PO4+H2O 7.CaO+H2O-->Ca(OH)2 Va rog ajutati-ma ca nu stiu. :o3