Question

Halla el porcentaje de magnesio en: MgSO4. P. A. (Mg = 24, S = 32, O = 16)

Answer 1

Mm MgSO4

Mg: 1 x 24 = 24 g/mol
S: 1 x 32 = 32 g/mol
O= 4 x 16 = 64 g/mol
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           Mm = 120 g/mol

Magnesio:

120 g -------- 100 %
  24 g --------    x

x = 20% de magnesio

Azufre:

120 g -------- 100 %
  32 g --------    x

x = 26.67 % de azufre

Oxigeno:

120 g -------- 100 %
  64 g --------    x

x = 53.3 % de oxigeno