Question

COMPOSICION CENTESIMAL al2(so4)3

Answer 1

1. Calcular la Mm del sulfato de aluminio

Al: 2 x 26.98 = 53.96 g/mol

S: 3 x 32.06 = 96.18 g/mol

O: 12 x 15.99 = 191.88 g/mol

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Mm = 342.02 g/mol

2. calcular % de cada elemento

Aluminio (Al)

342.02 g ------- 100 %

53.96 g --------- x

x = 15.77 % Al

Azufre (S):

342.02 g ------- 100 %

96.18 g --------- x

x = 28.12 % S

Oxígeno (O)

342.02 g ------- 100 %

191.88 g --------- x

x = 56.10 % O