-calculez moli Al
niu= m/M= 270g/27g/mol=10mol
-calculez moli acid, sare H2 din ecuatia chimica
2mol....6mol............2mol........3mol
2Al + 6HCl-------> 2AlCl3 + 3H2
10mol....x= 30.......y=10.........z= 15molH2
-calculez masa acid si masa sol.acid
m= niuxM= 30molX36,5g/mol=1095gHCl
c= mdx100/ms---> ms= 1095x100/20g=..................calculeaza!!
-calculez masa de sare
m,ALCL3=niuxM= 10molx133,5g/mol=................calculeaza !!!
