Question

Repede ....va roggg mult

Answer 1

-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 !!!