Question

Задача по химии........

Answer 1

2E(OH)3 (t)= E2O3 + 3H2O

15.6/2x+102 = 5.4/54

15.6/2x+102 = 0.1

2x+102 = 15.6/0.1

2x+102 = 156

2x = 54

x = 27 г/моль

Ответ: Е = Al.