2Me + 2H2O = 2MeOH + H2 11.5/2x = 20/2(x + 17) 11.5/2x = 20/2x + 34 2x = 11.5(2x+34)/20 2x = (23x + 391)/20 40x = 23x + 391 17x = 391 x = 23 ==> Me = Na. Цим металом був натрiй.