Question

gostaria de ver passa a passa o calculo da massa molecular

Answer 1

Al = 27
S = 32
O = 16

Al₂ (SO₄)₃

Al = 2 x Al 

2 x Al = 2 . 27 = 54 

S₁ x 3 = 3 x S = 3 . 32 = 96

O₄ x 3 = 12 x O = 12 . 16 = 192

M = 54 + 96 + 192
M = 342

R.: 
M = 342 u

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