Question

Am nevoie de ajutor, URGENT

Answer 1

a.

1. 4Al + 3O2 --> 2Al2O3

2. 2Al + 3S --> Al2S3

3. 2Al + 3Cl2 --> 2AlCl3

b.

10g       10g         m g

2Al   +   3S -->   Al2S3

2x27     3x32     150

=> Al = 10/2x27 = 0,185

=> S = 10/3x32 = 0,104

=> Al este in exces si calculele le vom face fata de S

=> m = 10x150/3x32 = 15,625 g Al2S3