Question

Composicion centesimal de Sn2o

Answer 1

Mm SnO2

Sn: 1 x 118.7 = 118.7 g/mol
  O: 2 x 16 = 32 g/mol
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             Mm = 150.7 g/mol

estaño:

100 % ........ 150.7 g
   x      ------- 118.7 g

x = 78.76 % Sn

OXIGENO

100% ------- 150.7 g
    x    -------  32 g

 x = 21.23 % O