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Composición porcentual de : HF, F2o, L2, CH2o?

Composición porcentual de : HF, F2o, L2, CH2o.

En resumen

HF Mm H : 1 x 1 = 1 g / mol F = 1 x 19 = 19 g / mol `````````````````````````````` Mm = 20 g / mol H : 20 g - - - - - - 100 % 1 g . X x = 5 % F : 20 g - - - - - - 100 % 19 g .

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7

HF

Mm

H : 1 x 1 = 1 g / mol

F = 1 x 19 = 19 g / mol

`````````````````````````````` Mm = 20 g / mol

H : 20 g - - - - - - 100 % 1 g .

X x = 5 %

F : 20 g - - - - - - 100 % 19 g .

X x = 95 %

F2O

Mm

O : 1 x 16 = 16 g / mol

F = 2 x 19 = 38 g / mol

`````````````````````````````` Mm = 54 g / mol

O : 54 g - - - - - - 100 % 16 g .

X x = 29, 63 %

F : 54 g - - - - - - 100 % 38 g .

X x = 70.

37 %

CH2O

Mm

C : 1 x 12 = 12 g / mol

H : 2 x1 = 2 g / mol

O : 1 x 16 g / mol = 16 g / mol

```````````````````````````````````````` Mm = 30 g / mol

C : 30 g - - - - - - 100 % 12 g - - - - - - x x = 40%

H : 30 g - - - - - 100 % 2 g - - - - - x x = 6.

667 %

O : 30 g - - - - 100 % 16 g - - - - - x x = 53.

33 %

no resolvi el L2 indica que es?