Question

El % de F en compuesto KrF2 es

Answer 1

1. calcular Mm de KrF2

Kr =  1 x 83.80 = 83.80 g/mol
 F =  2 x 18.99 `= 37.98 g/mol
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                 Mm = 121.78 g/mol

2. calcular %

Kriptón

121.78 g ----- 100 %
  83.80 g -----      x

 x = 68.81 % Kr

FLÚOR

121.78 g ----- 100 %
  37.98 g ------    x

 x = 31.19 % F