Question

El cloruro de aluminio se forma cuando reaccionan 13,43g de aluminio con 53,18g de cloro calcular cual es la composicion porcentual del ALCL3

Answer 1

Mm:
Al: 26.98 g/mol
Cl: 35.45 g/mol

calcular Mm del AlCl3
Al: 1 x 26.98 = 26.98 g/mol
Cl: 3 x 35.45 = 106.35 g/mol
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             Mm = 133.33

calcular %

Al:
133.33 g ----- 100 %
   26.98 g -----    x

x = 20.23 %

Cl
133.33 g ---- 100 %
106.35 g ----      x

x = 79.78 %