calculez moli Al,stiind A,Al=-27g/mol
n(niu)= m/M= 54/27-> 2 MOL
calculez moli HCl si AlCl3
2mol.... .6mol ....2mol
2Al + 6HCl---> 2AlCl3 + 3H2
2mol......n=6mol.....n= 2mol
calculez masa solutiei
mHCl= nxM= 6x36,5g--> 219g ,aceasta este md din conc.procentuala
c=mdx100/ms, 10= 219x100/ms.......................> calculeaza ms !!
calculez masa sarii
m,AlCl3= nxM= 2X133,5 g=.....................calculeaza !!!!