Решите химию уравнения реакций
2Fe (OH)3 = Fe2O3 + 3H2O Cu (OH)2 = CuO + H2O 2Al (OH)3 = Al2O3 + 3H2O 2Cr (OH)3 = Cr2O3 + 3H2O Pb (OH)2 = PbO + H2O Zn (OH)2 = ZnO + H2O