Răspunsuri

Cel mai inteligent răspuns!
2014-11-09T18:31:43+02:00
2Al+6HCl=>2AlCl3+3H2
suma coeficientilor: 2+6+2+3=13
raspuns corect: D13
1 5 1
2014-11-09T20:00:41+02:00