81 g xg yg
2 Al +3Cl2 =2Al Cl3
2.27g 3.71g 2.133,5g
MCl2=2.35,5=71------>1mol=71g
MAlCl3=27+3.35,5=133,5------->1mol=133,5g
x=81.3.71:2.27=319,5 g clor
se afla nr. de moli de clor
n=m:M
n=319,5 g: 71 g/mol=4,5 moli clor
VCl2=4,5moli.22,4 litri/moli=100,8 litri
y=81 .2 .133,5:2 .27=400,5 g AlCl3
se afla nr. de moli
n=m:M
n=400,5g :133,5 g/moli=3moli